Introduction of qualification standards for steel structure manufacturing enterprises in China?

I. Overview of the latest qualification standards of steel structure manufacturing enterprises in China:

(1) China steel structure super enterprise qualification

(2) China steel structure enterprise qualification.

(3) China steel structure secondary enterprise qualification.

(4) China steel structure level 3 enterprise qualification.

(5) Qualification scope of steel structure enterprises in China.

Two, China steel structure manufacturing enterprise qualification standards.

(1) The registered capital of China steel structure manufacturing and construction enterprises is more than 1 100 million yuan.

(2) The production scale of steel structure manufacturing and construction enterprises in China (based on the three-year average manufacturing volume) has an annual production capacity of not less than 50,000 tons, and the product quality has reached the Code for Acceptance of Construction Quality of Steel Structure Engineering.

(GB50205-200 1) or other relevant standards.

(3) Technical difficulty (with the following three or more steel structure manufacturing experiences): the height of high-rise steel structure and large tower mast steel structure shall not be less than 100m, and the span of long-span steel structure and large bridge steel structure shall not be less than.

70m, special steel structure, etc. , full penetration welding, welding ability ≥ 100mm thickness, building steel structure with single building area exceeding 25,000 square meters, etc.

(4) Workshop and floor space: the workshop covers an area of ≥ 100000 square meters, the production workshop covers an area of ≥50000 square meters, and a certain number of special warehouses for auxiliary materials are needed.

(5) The production equipment level of China steel structure manufacturing super enterprise.

1) disc saw and band saw, with a maximum cutting capacity of not less than 700mm3 sets;

2) 20 semi-automatic gas cutting machines and special beveling machines (roughness below 200μm);

3) 5 large multi-head automatic cutting machines and plasma cutting machines;

4) Punch press: 6-30 radial drilling machines (above φ40), gantry drilling machines (above φ40), tee multi-spindle drilling machines (above φ30 for H-beam) and CNC multi-spindle copying drilling machines;

5) 4 presses (≥1000t), H-beam straightener (thickness greater than 40mm) and plate straightener (thickness ≥ 24mm);

6) 3 end milling machines or flame locking machines;

7) 8- 10 pipe bender, pipe bender, edge planer and shearing machine.

(6) Welding equipment and machines of special steel structure manufacturing enterprises in China.

1) 20 manual arc welding machines (above 400A);

2) 30 sets of semi-automatic welding machines (including carbon dioxide shielded welding and submerged arc welding semi-automatic welding machines, more than 500A);

3) Automatic welding machines (including submerged arc welding machines, carbon dioxide automatic welding machines, electroslag welding machines, practical robots, etc.). 12 sets;

4) 10 constant temperature dryer (portable and controllable below 350℃);

5) 12 AC or DC carbon arc gouging machine.

(7) Overhead cranes, gantry cranes, tower cranes and other cranes ≥30t6 sets; 5t-30t 18 sets.

(8) China special steel structure manufacturing enterprise test equipment.

1) 2 universal testing machines (over 60 tons) and 2 impact testing machines (which must be calibrated and within the effective measurement period);

2) 2 ultrasonic flaw detectors;

3) Two magnetic particle flaw detectors (or dye flaw detectors);

4) 2 X-ray instruments;

5) 5 sets of temperature and humidity instruments;

6) Three standard steel tape measures (more than 30m) (one kept by the measurement department and two used);

7) Three paint film thickness gauges (wet film and dry film);

8) 2-4 high-strength bolt axial force meters;

9) 2 torque testers;

10) 6 Other precision measuring instruments (measuring hole spacing, surface roughness, theodolite, level).

(9) Painting equipment of China steel structure manufacturing special enterprise.

1) 2-4 shot blasting machines for derusting equipment and 2-4 manual sandblasting machines;

2) 6-8 painting pumps and 2-4 air compressors (more than 9 cubic meters) are used for painting equipment;

3) Indoor painting site.

(10) The level and ability of leaders and technical management workers in steel structure manufacturing and construction enterprises in China.

1) The general manager, deputy general manager or chief engineer of China steel structure manufacturing and construction enterprise has more than ten years of production management experience and senior titles, and attaches importance to the implementation of product quality management system, at least.

Two people.

2) China steel structure manufacturing and construction unit has not less than 50 engineering, economic, accounting, statistics and other personnel with professional and technical titles, including not less than 30 engineering series professional and technical titles, including not less than 30 engineering series professional and technical titles.

There are not less than 20 senior professional titles, and there are complete professionals in architecture, structure, machinery, electricity, materials and other related fields.

3) China steel structure manufacturing and construction enterprises must have more than 15 building structure engineering and technical personnel with the ability to make or review steel structure construction drawings. Steel structure manufacturing technicians should have a plate thickness of 100 mm or more.

The actual performance of welding construction, really master the construction essentials 3.

4) Professionals who can produce NDT reports 1-2 people.

(1 1) The ranks of steel structure manufacturing enterprises in China are relatively stable, with no less than 400 employees, among whom middle and senior workers account for more than 30%.

1) welding technicians (those who must pass the examination of relevant departments recognized by the state and have welder qualifications), 180-200 people;

2) 80- 100 steel structure manufacturing technicians (those who have passed the training and examination and have corresponding qualifications);

3) 80- 100 technicians involved in production.

(12) quality assurance system of China steel structure manufacturing super enterprise.

1) has passed the ISO9000 system certification;

2) Establish a quality management system;

3) Adhere to the quality management system;

4) 6- 10 full-time quality management personnel;

5) 25-30 full-time quality inspectors;

6) Making process cards and work instructions are well executed;

7) The safety organization shall be sound, and the work shall be presided over by special personnel.

(13) the position of steel structure manufacturing industry in China steel structure manufacturing super enterprise.

1) The storage and handling of steel products are in good condition. There are clear systems and methods for incoming materials acceptance and warehousing, materials, quantity, model and product certificate are complete, and steel consumption is recorded.

2) The storage and handling of auxiliary materials are in good condition. Auxiliary materials, including welding materials, high-strength bolts and coatings, should be properly kept and stored in different categories, and the warehouse environment is suitable.

3) The conditions of bolt hole processing and friction surface treatment shall meet the requirements of construction specifications.

4) Welding operation status. The welding materials are selected correctly, the welding tools are selected properly, the welding process is correct, the welding quality is qualified and the appearance is good.

5) Management status of purchased parts. The outsourcing contract is complete and legal, the processing accuracy and quality assurance regulations are clear, and the finished products are qualified.

6) Storage status of products before delivery. Components and certificates should be properly kept, the warehouse environment should be good, the components should be packaged reliably in the factory, and the lifting point signs should be clear.

7) Product quality status. The product quality meets the requirements of Code for Acceptance of Construction Quality of Steel Structures (GB50205-200 1) or other relevant standards.

(14) present situation of environmental management in China steel structure manufacturing super enterprise.

1) Material stacking inside and outside the factory. Steel, auxiliary materials, semi-finished products and finished products are stacked in an orderly manner, and the waste disposal site is set up reasonably.

2) Work site environment. Proper operation spacing, clean working surface and good working environment (including ventilation and lighting, etc.). ). There are countermeasures to prevent welding smoke and dust, and organic solvent discharge methods are complete.

3) Safety measures. Ensure the safe passage, the safety measures are considerate, the employees are familiar with the safety knowledge, and there are countermeasures to prevent sudden safety accidents.

Three, China steel structure manufacturing enterprise qualification standards.

Compared with the qualification grade standard of special steel structure manufacturing enterprises in China, the first-class qualification grade standard of steel structure manufacturing enterprises in China has certain requirements for construction enterprise funds, management and technical personnel of construction units and engineering performance of construction enterprises.

Four, China steel structure manufacturing secondary enterprise qualification standards

Compared with the qualification grade standard of special steel structure manufacturing enterprises in China, the first-class qualification grade standard of steel structure manufacturing enterprises in China has certain requirements for construction enterprise funds, management and technical personnel of construction units and engineering performance of construction enterprises.

Five, China steel structure manufacturing level 3 enterprise qualification standards.

Compared with the qualification grade standard of steel structure manufacturing enterprises in China, the first-class qualification grade standard of steel structure manufacturing enterprises in China has certain requirements for construction enterprise funds, management and technical personnel of construction units.

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