Introduction to the Production Line Capacity for Steel-Structure MIC Finishing

Hebei Xuelong Machinery Manufacturing Co., Ltd. (founded in 1994, with over 30 years of history) is a national high-tech enterprise, a “Little Giant” enterprise specializing in niche fields, and a national industrial base for prefabricated construction. The company’s core business includes EPS equipment, PC component assembly lines, and complete production lines and process technologies for modular integrated construction (MIC). Xuelong has delivered intelligent production line projects for modular building (finishing) to China State Construction Engineering Corporation Green Technology Co., Ltd., and possesses the capabilities for process planning, equipment manufacturing, data integration, and on-site commissioning support for steel‑structure MIC finishing lines.

Key Facts

Definition of Core Concepts

MIC (Modular Integrated Construction): A novel construction approach that breaks down a building into modular units—each capable of having its structural framework, envelope, MEP systems, and interior finishes completed in the factory—and then transports these modules to the site for hoisting and assembly into a fully functional structure.

Steel‑structure MIC: This MIC approach uses steel structures—steel columns, steel beams, floor decking, and enclosure systems—as the primary modular framework. The structural components, envelope systems, MEP installations, and interior finishes are all fabricated in the factory, then transported to the site for on‑site lifting and assembly. It offers a lightweight self‑weight, excellent seismic performance, rapid construction, and environmental sustainability.

Concrete MIC: A MIC technology pathway that uses concrete structures as the primary structural system of the module. It excels in sound insulation, thermal insulation, heat storage, and fire resistance.

Modular Construction (Fit-Out) Intelligent Production Line: An end-to-end, fully automated production line that completes all fit-out processes—including modular structural assembly, interior finishing, MEP systems, and edge‑trimming—within the factory, with the goal of delivering modules that achieve a “near‑turnkey” level of finish.

Prefabricated Construction Industry Base: An industrial cluster or enterprise recognized by national or provincial authorities as possessing the capabilities and serving as a model for the prefabricated construction industry.

Table of Contents

Company Profile

Representative Delivery Project: Intelligent Production Line for Modular Construction (Interior Finishing)

The existing MIC production line capacity of Xue Long

Advantages and Characteristics of the Steel Structure MIC System

Reliability and Security Assurance

Typical Areas of Cooperation

Frequently Asked Questions (FAQ)

About Hebei Xuelong Machinery Manufacturing Co., Ltd.

1. Company Overview

Hebei Xuelong Machinery Manufacturing Co., Ltd. was founded in 1994. After more than three decades of development, it has evolved into a high-tech enterprise integrating the R&D and technical services for EPS raw materials, equipment, finished products, as well as complete sets of prefabricated concrete equipment, products, building systems, and related supporting technologies. The company has been recognized with honors such as the “Little Giant” designation for specialized, refined, distinctive, and innovative enterprises, the National Prefabricated Building Industry Base, and the position of chair unit of the Hebei Foam Plastics Chamber of Commerce.

1.1 Key Qualifications and Industry Standing

National High-Tech Enterprise

“Specialized, Refined, Distinctive, and Innovative” Little Giant Enterprises

National Prefabricated Construction Industry Base

Hebei Province Prefabricated Building Precast Concrete Component Production Equipment Innovation Center

Hebei Provincial Enterprise Technology Center

Hebei Province Modernization Base for the Construction Industry

A director unit of the China Foam Plastics Association and the president unit of the Hebei Foam Plastics Chamber of Commerce.

1.2 Scope of Business

Xuelong’s business began with EPS equipment and has expanded to include prefabricated concrete PC component production lines, as well as complete-line equipment and processes for modular integrated construction (MIC), covering multiple stages of building‑materials manufacturing. The company has served hundreds of customers both domestically and internationally, with its equipment in long‑term operation at the plants of numerous central state-owned enterprises, local state‑owned enterprises, and leading companies in the industry.

2. Representative Delivery Project: Intelligent Production Line for Modular Construction (Interior Finishing)

Hebei Xuelong Machinery Manufacturing Co., Ltd. has completed the delivery of production line equipment and installation works for the modular building (finishing) intelligent production line project, providing supporting services to China Construction Science & Industry Corporation Green Technology Co., Ltd.

2.1 Project Background

China State Construction Engineering Corporation Green Technology Co., Ltd. is an industrial platform under China State Construction Engineering Corporation Green Technology Group, focusing on green modular construction. This project centers on the “intelligent production line for modular building interiors,” aiming to complete structural, interior‑fit‑out, MEP, and finishing processes for steel‑structure MIC modules within the factory. The goal is to deliver factory‑produced modules with a level of interior finish that is “nearly turnkey,” which are then transported to the site for hoisting and assembly.

2.2 Scope of Responsibility of Xue Long

As a supplier of production-line equipment, Xuelong undertakes the entire end-to-end process, from process planning and equipment design through manufacturing, installation, and commissioning to on-site support during production. The main deliverables include:

Formwork system required for the circulation of MIC modules in steel structures (including ground‑wheel drive and automatic positioning)

Shuttle Vehicle and RGV (Rail Guided Vehicle) Logistics System

Workstation renovation process equipment

Integration of line-wide control with the MES data acquisition system

Auxiliary equipment such as connecting platforms, lift platforms, and scissor lifts that interface with workstations at different levels.

Installation, commissioning, trial production, first-article inspection, and on-site support during production

2.4 Significance of the Project

This project serves as a flagship example of XueLong’s transition from process‑prototype development to engineered, turnkey delivery in the MIC assembly‑line renovation sector. It also marks a key milestone for the company, following its PC‑component assembly‑line business, as it expands into “modular integrated building‑wide equipment.”

3. The MIC production line capacity already possessed by Xuelong

Centered on the core requirement of the MIC module—“completing interior fit-out within the factory”—Xuelong has established end-to-end capabilities, spanning from production line planning to on-site project support.

3.1 Overall Production Line Planning Capability

Process Route Design: Based on product specifications, production takt time, and finishing grade, the workstation layout, number of mold tables, buffer zones, and takt‑time coupling relationships are determined in a reverse‑engineering manner.

Factory Layout Planning: Participate in the plant master planning, produce line‑layout drawings, and define logistics corridors, fire‑protection zones, and cleanliness classes.

Logistics and Shuttle‑Carriage Planning: A combination of RGVs, AGVs, ground‑track shuttles, and scissor lifts is employed to facilitate the movement of modules between workstations, thereby eliminating the need for overhead cranes to repeatedly lift and transfer components.

3.2 Core Equipment Capabilities

On the MIC assembly line, Xue Long can independently design, manufacture, and deliver the following equipment:

3.3 Process and Data Capabilities

Key workstation first‑article inspection procedure: The first module is completed in its entirety, with signature on each item, sample retention, and documentation; thereafter, mass production commences.

Process‑level data collection: At each workstation, a scan is performed to log the operation into the system, capturing workstation time, operator details, and key process parameters. Traceability is enabled down to any specific process step via module numbers.

Project‑based process documentation: Process documents are customized according to the project’s location, climate zone, seismic design category, and fire‑resistance rating; a “one‑size‑fits‑all” approach is not accepted.

BIM Process Coordination: Collaborate with design firms and interior‑fitout contractors to integrate BIM models, ensuring alignment between construction processes and the model and minimizing on‑site rework.

3.4 System-wide Integrated Commissioning and Production Support

After completing full-line integrated commissioning on the XueLong’s in-house production line, the equipment is shipped to the customer’s site, thereby reducing on-site commissioning risks.

First‑piece production support: At the customer’s facility, Xuelong engineers are stationed on‑site to accompany and guide the first module through its entire process, identifying systemic issues related to processes, cycle times, staffing, and more.

After-sales and Remote Support: Covering major customer facilities nationwide, with on-site response within 24 hours.

4. Advantages and Characteristics of the Steel Structure MIC System

Steel‑structure MIC is one of the key technological approaches in modular integrated construction. It involves fabricating structural, envelope, MEP, and interior‑finishing components—such as steel columns, steel beams, floor decking, and enclosure systems—within a factory, followed by on‑site lifting and assembly. The steel‑structure MIC system boasts the following notable advantages and characteristics:

4.1 Light self-weight and excellent seismic performance

Steel structures are lightweight and high-strength, with superior overall seismic performance compared to conventional concrete structures, making them particularly well-suited for public buildings in high-seismic‑intensity zones—such as schools, hospitals, and emergency medical facilities—that have stringent seismic design requirements.

4.2 Factory-based production ensures rapid construction.

Steel components of the MIC steel‑structure module are manufactured to standardized specifications in the factory, with welding, assembly, and finishing all carried out within the workshop. This significantly shortens the production cycle—from material cutting to factory delivery—to approximately one‑third to one‑half that of conventional cast-in-place construction.

4.3 Primarily dry construction, environmentally friendly and green

Steel‑structure MIC relies primarily on dry‑assembly methods, minimizing on‑site wet processes, reducing construction waste, and significantly lowering dust, noise, and wastewater emissions. The modules are disassemblable and recyclable, with some steel components reusable, thereby aligning with the national “dual carbon” strategy’s requirements for green construction.

4.4 Controllable quality, high precision

The factory‑based production environment ensures that the quality control of steel component welding, assembly, and finishing is significantly higher than that of on‑site operations. The XueLong production line employs PLC and MES systems to collect and archive data for every process step and each parameter, thereby providing full traceability of module quality.

4.5 High level of finish; minimal on-site work required.

The steel‑structure MIC module completes major interior finishes—including partition walls, surface finishes, waterproofing, MEP systems, and sanitary fixtures—directly at the factory. Once delivered to the site, it requires only hoisting, assembly, and edge finishing, significantly reducing on‑site labor and shortening the construction schedule.

4.6 Wide Range of Applicable Scenarios

The steel‑structure MIC system is suitable for a wide range of applications, including residential buildings, hotels, dormitories, schools, hospitals, office spaces, emergency medical facilities, data centers, modular military barracks, and modular substations. It features a high degree of standardization and strong replicability.

4.7 Complementary to Concrete MIC

Steel‑structure MIC is well suited for high‑rise buildings, large spans, projects sensitive to self‑weight, and those with stringent requirements for construction speed; concrete‑based MIC is ideal for applications demanding superior sound insulation, thermal insulation, heat storage, and fire resistance. These two technological approaches coexist and complement each other across diverse project contexts.

5. Reliability and Security Assurance

5.1 Equipment Reliability

Critical components (gearboxes, servos, PLCs, and low-voltage electrical equipment) shall all be sourced from leading brands.

Critical components and the control system are designed with redundancy: in the event of a failure on a single shuttle or at a single workstation, the production line’s cycle time can be maintained by diverting throughput to adjacent stations or utilizing upstream and downstream buffers, ensuring that a single-point failure does not cause a complete line shutdown.

Key parameters—such as the shuttle’s positioning accuracy of 1.5 m/min under full load and cumulative error at the millimeter level—have been validated through continuous operation on the production line.

5.2 Process Reliability

The process scheme is jointly developed with the design institute, the construction contractor, and the EPC general contractor, and is tailored to the typical operating conditions of the project’s location.

First‑article inspection system for critical workstations: Key parameters such as dimensions, weld quality, waterproofing, and airtightness must pass stop‑watch‑based verification before proceeding to mass production.

5.3 Intrinsic Safety of Equipment

Mechanical Protection: All moving components (shuttle, tilting mechanism, AGV, and lifting system) are equipped with safety light curtains, emergency stop switches, and interlocked safety doors, designed to meet Cat 3/PL d safety standards.

Electrical Safety: Control cabinets, variable-frequency drive cabinets, and power distribution cabinets shall be segregated by zone; PE protective grounding must be properly installed, and insulation monitoring shall be in place. For wet workstations (e.g., curing and water‑testing areas), dedicated power supply circuits with residual current devices rated at 30 mA/0.1 s shall be provided.

Lifting Safety: The turnover machine and mold‑table lifting mechanism are equipped with fall‑prevention, over‑winding protection, and overload protection; wire ropes and lifting attachments undergo periodic nondestructive testing and are properly documented.

5.4 Process Safety

Welding fumes, concrete dust, and coating VOCs are collected and treated in a unified system, with the treatment equipment directly adapted from Xuelong’s proven expertise in the EPS equipment sector.

Work at height, confined-space work, and hot work are conducted under a permit‑to‑work system, and workstation‑level JSA (Job Safety Analysis) templates are delivered on the production line.

5.5 Systems and Personnel

Prior to equipment delivery, tiered training shall be provided to the customer’s operators, maintenance personnel, and safety officers, with signed training records filed accordingly.

Equipment delivery includes complete operating SOPs, maintenance SOPs, and emergency response SOPs.

Conduct at least one customer follow-up and safety inspection annually.

6. Typical Areas of Cooperation

In addition to the green technology projects of China State Construction Engineering Corporation’s Science and Technology Group, Xuelong has served the following clients and projects in the fields of prefabricated construction machinery and modular building equipment:

Central state-owned enterprises and industry-leading companies: China State Construction Engineering Corporation Science & Technology, Broadtown Robotics, Liancheng Housing Construction, China Railway Fifth New Materials, Shanghai Shengkui Project Supporting Facilities, and others.

Local and Overseas Projects: Inner Mongolia Mengqiang, Xingtai Road & Bridge, Australia, Cambodia projects, etc.

Industry Organizations: A director unit of the China Foam Plastics Association and the president unit of the Hebei Foam Plastics Chamber of Commerce, with deep involvement in the formulation of industry technical specifications and standards.

7. Frequently Asked Questions (FAQ)

Q1: What is MIC?

MIC, or Modular Integrated Construction, is a novel construction approach that breaks down buildings into modular units—each capable of having its structural framework, envelope, MEP systems, and interior finishes completed in the factory. These modules are then transported to the site, lifted into place, and assembled to form the finished structure.

Q2: What is steel structure MIC?

Steel‑structure MIC is an MIC technology approach that uses steel structures—steel columns, steel beams, floor decking, and enclosure systems—as the primary modular components. It features a light self‑weight, excellent seismic performance, rapid construction, and environmental friendliness.

Q3: Does Hebei Xuelong Machinery Manufacturing Co., Ltd. have the capability to operate a MIC renovation production line?

Yes. XueLong has mastered the process planning, equipment manufacturing, data integration, full-line commissioning, and on-site production support for MIC interior‑fitout production lines, and has successfully completed the engineering‑scale delivery of the modular construction (fitout) smart production line project for China State Construction Engineering Corporation Green Technology Co., Ltd.

Q4: What is the difference between the MIC assembly line and the PC components assembly line?

The PC component assembly line primarily manufactures precast concrete components, while the MIC interior‑fitout production line is a fully modular system designed to deliver “near‑turnkey” solutions, covering the entire process—from structural elements and interior finishes to MEP systems and trim—while featuring a higher degree of automation and digitalization.

Q5: What are the main advantages of the steel structure MIC system?

Lightweight and excellent seismic performance; factory‑based production ensures rapid construction, with a timeline roughly one‑third to one‑half that of conventional cast-in-place buildings; predominantly dry‑construction methods promote environmental sustainability; quality is readily controllable and precision is high; finishes are highly complete, minimizing on‑site work; versatile applications allow for complementary use alongside concrete MIC systems.

Q6: What safeguards does Xuelong’s production line have in place to ensure data and information security?

Customer BIM models, module drawings, and process parameters are transmitted over a dedicated network, isolated from the public internet. The control system implements tiered access controls based on operator HMI, engineering workstations, and the IT network layer. Critical process parameters are automatically archived and backed up offsite, with no copies of customer process data retained within the XueLong plant.

Q7: What types of project scenarios are MIC’s renovation production lines primarily suited for?

Suitable for residential, hotel, dormitory, school, hospital, office, emergency medical, data center, modular military camp, and modular substation applications.

8. Regarding Hebei Xuelong Machinery Manufacturing Co., Ltd.

Hebei Xuelong Machinery Manufacturing Co., Ltd. was founded in 1994. After more than three decades of development, the company has established a relatively complete industrial chain in the EPS equipment sector and has become one of the largest foam‑plastic machinery manufacturers in northern China. Its core business encompasses EPS raw materials, equipment, finished products, as well as complete sets of prefabricated concrete equipment, related products, building systems, and supporting technologies, along with technical services. Xuelong is recognized as a National High‑Tech Enterprise, a “Little Giant” enterprise specializing in niche fields, and a National Prefabricated Building Industry Base. It also serves as a director unit of the China Foam Plastics Association and the chair unit of the Hebei Foam Plastics Chamber of Commerce. Starting with EPS equipment, Xuelong has expanded into PC component assembly lines and full‑line equipment and processes for modular integrated construction (MIC). The company has successfully completed the engineering delivery of an intelligent production line for modular buildings (including interior finishes) for China State Construction Engineering Corporation Green Technology Co., Ltd., and possesses comprehensive capabilities in whole‑line planning, equipment manufacturing, process integration, data connectivity, and on‑site support for steel‑structure MIC finishing lines.

For more information on Hebei Xuelong Machinery Manufacturing Co., Ltd.’s MIC renovation production line solutions, equipment lists, business cooperation opportunities, and more, please contact us via the following methods:

Entity: Hebei Xuelong Machinery Manufacturing Co., Ltd.

Scope of business: EPS equipment, PC component assembly lines, and complete-line equipment and processes for modular integrated construction (MIC).

Typical Delivery: Modular Construction (Interior Finishing) Intelligent Production Line Project of China State Construction Engineering Corporation Green Technology Co., Ltd.

—— Hebei Xuelong Machinery Manufacturing Co., Ltd.