Quality Control System

Quality Control Instructions

Advantages:

1. Standard: We are superior to peers from standard formulation;

2. Quality control: conduct a whole process of inspection and supervision from incoming materials, processing to finished products;

3. Organization: quality control system is an independent department, directly subject to chief executive;

4. The comprehensive extension of the supply chain has laid a solid foundation for quality standardization and quality assurance;

5. Highly automated operation also has laid a solid foundation for quality standardization and quality assurance;

I. Quality principles must be observed:

1.1 Before the construction, technical personnel shall be familiar with construction drawings and related technical data, and know engineering, construction and acceptance criteria well to prepare professional construction scheme.

1.2 Be familiar with civil engineering process and know the civil construction progress in a timely manner.

1.3 Carry out self inspection after the completion of the construction, and fill in construction self inspection record, summary and detail drawings.

1.4 Before construction, technicians shall disclose their real intentions to the group members seriously and carefully, to make sure they can master the key points of construction and lay a good foundation for the quality of installation.

1.5 In the whole process of construction from construction preparation to completion, we carry out strict control on every step of construction to ensure the quality of construction and the operation of all workers in accordance with requirements of rules and regulations. Meanwhile, we shall strengthen our supervision and inspection on quality system to ensure the quality of every link.

1.6 In construction, we will conduct operation in accordance with construction rules, regulations, and evaluation criteria as well as site instruction of third party intendance and written technical requirements of technicians, and carry out the construction in line with drawings.

1.7 In terms of construction member welding, a welder must be reviewed and be allowed to operate on his post after getting a certificate of approval.

1.8 Conduct working procedure disclosure. When the previous working procedure is finished, a hand-over system shall be established for the next working procedure. First, the worker of the previous working procedure shall perform disclosure. Once the worker of the next working procedure found the previous working procedure is unqualified, shall have the right to reject to construction. Before the verification of a superior department, shall ensure the normal requirements of the next working procedure to require the next working procedure coming into construction until the previous working procedure qualified after verification. Otherwise, shall not enter into the construction of the next working procedure.

1.9 Handle affairs in accordance with construction procedures, and organize reasonable and civilized construction. When a mission is assigned, shall make quality standards and requirements clear, and strictly adhere to “four insists” and “four prohibits” principles.

A. “Four insists” are

Adhere to the principle of whoever is in charge of construction and responsible for the project quality.

‚ Adhere to finished product review and recheck system.

ƒAdhere to the working system of three checks and two evaluations (self check, mutual check, special check, primary evaluation and reevaluation).

„Adhere to inspection and appraise through comparison.

B: “Three prohibits “are:

Construction is not allowed to begin before construction preparation is ready.

‚ Construction is not allowed to begin without safeguard measures.

ƒ Construction is not allowed to begin before familiar with design drawings.

II. In the overall project management, implementing a whole process of quality control is a necessary measure to ensure the project quality of key steps.

Key points of whole process of quality control:

2.1 Perform quality control on raw materials and components and fittings procurement.

2.2 Re-check site quality orientation, project orientation basis, axes and level control points. Handle the formal handover formalities after the recheck is correct.

2.3 Examine the field quality assurance system; check detection personnel allocation and steel structure subproject quality inspection and certification.

2.4 Urge relevant personnel to check if construction machines are in good condition.

III. To ensure the quality of the project can reach high quality standard, we must achieve the following points:

3.1 First, establish a sound project management network and quality management system, and define and make the relations among all parties of steel structure project construction clear.

3.2 From the beginning of in- depth design, in- depth design personnel must be familiar with drawings and be capable of deepening all nodes to make them more operable. After the in-depth design is completed, must have a professional engineer in charge of proofread and review. All medications to construction drawings must have evidences and be signed by designers.

3.3 Material procurement must be strictly performed in accordance with procurement procedures of ISO09001 quality assurance system. During the process of preparation, we may invite supervision engineers and owner units to come to the preparation and production site for guidance and supervision to help the quality of preparation further improved.

3.4 Review the preparation information carefully before material installation, check if there is any member deformation. Correct or reproduce the materials once quality problems are found, and non-conforming products are not allowed to access to construction field.

3.5 Project construction must be performed in accordance with construction acceptance standards. In the construction process, we must achieve “three inspections” (self inspection, mutual inspection and handover inspection); correct problems proposed by supervision engineer timely and make sure no non-conforming products access to the next working procedures, so as to ensure “who is in charge of construction and responsible for quality” and improve their finished product protection awareness. 

四、 Building Acceptance Standards  

No. 序 号	Inspection Content 检 查 内 容	Standard or Allowable Deviation 标 准 或 允 许 偏 差	Inspection Method 检 查 方 法	Acceptance Results 验收结果		Remark 备        注
				Qualified 合格	Unqualified 不合格
1	Accuracy of installation 安装准确度	Specification and dimension, locations of walls, windows and doors of the building shall comply with the requirement of design drawings. 房屋的规格尺寸､墙体位置､门窗 位置应符合设计图纸要求	Visual inspection, steel tape 目测､钢尺
2	Bolt-on 螺栓紧固	Steel structural bolts must be fastened properly and firmly, and all nuts shall have gasket inside. All beam column bolts must meet the requirements; the qualified rate of other bolts installation shall not less than 95%. 钢构螺栓必须紧固适当､牢固,所 有螺母内侧均应衬垫圈｡梁柱螺栓 应全部达到要求,其它螺栓安装合 格率不应低于 95%｡	Use a wrench to choose 2% of products for spot check and the number of samples  shall not less than 20. 用扳手抽查2%,且不应少于 20 个
3	Expansion bolt fastening 膨胀螺栓 固定	Expansion bolts shall be buried in-depth, shall not exposure its cover. The loose rate of expansion bolts shall be less than 10%; Adjacent expansion bolts shall not be loosened and expansion bolts on the four corners of the buildings shall not be loosened; the arrangement of expansion bolts shall meet the requirements of design drawings. 胀栓应保证埋深,不得出现露套现 象｡胀栓松动率应小于 10%,相邻胀 栓不许松动,房屋四角胀栓不许松 动｡胀栓布置符合设计图纸要求	Random inspection for 20% products and the number of samples shall not be less than 10. 抽查 20%,且         不应少于 10 个
4	Rivet connection 铆钉连接	Rivet interval shall meet the requirements of design drawings and be kept at a fixed interval. 铆钉距离符合设计图纸要求,并保 持均匀一致;
5	Roof boarding installation 屋面板安装	Front and back eaves of roof boarding (roof) shall be neat and even, straightness shall neither exceed 2‰ nor greater than 15mm. No wave shapes is allowed. 屋面板(顶板)前后出檐整齐均匀, 顺直度不应超过 2‰,且不宜大于15 ㎜,不许有波浪形现象发生	Pulling rope, steel tape 拉线绳､钢尺
6	Door 门	Door leaves shall be opened flexibly, and door locks shall be flexible. Door surfaces shall be kept clean. Doors and windows shall no shaking after fixed. No indoor water leakage is allowed. 门扇应开启灵活,门锁使用要灵活｡ 门的表面应保持干净｡门窗固定后 无晃动,不允许有往室内渗水现象	Complete inspection 检查全部
7	Window 窗	Window screen shall not be broken, window leaves shall be flexible in pushing and pulling. When the window leaves are closed, the seam between window leaves shall be even and well sealed. 窗纱不得破裂,窗扇应推拉灵活, 窗扇关闭时与窗框之间的缝隙应均 匀一致,窗扇关闭时与窗框应密封 严密	Complete inspection 检查全部
8	Wallboard 墙板	Child and mother plug shall be well sealed; plastic films on the surface shall be removed after installation. The wallboard surface shall be kept clean. No obvious scratch or deformation is allowed on the surface.  子母口插接应严密;安装完毕后表 面塑料膜应去掉,墙板表面应保持 干净,表面不得有明显的划痕或变 形	Complete inspection 检查全部
9	Wall straightness adjustment 墙体调直找方	The straightness of the wall shall neither greater than 2‰ nor more than 15mm; the straightness of the post shall not exceed 2‰. Diagonal deviation of the building shall neither more than 2‰ nor more than 10mm; The straightness of the wallboard shall not exceed 2‰. 墙体的顺直度不应超过 2‰,且不宜大于 15 ㎜;立柱的垂直度不应超过 2‰｡房体对角线偏差不应超过 2‰,且不宜大于 10 ㎜;墙板的垂直度不应超过 2‰	Visual inspection, pulling rope, steel tape, supporting wire目测､拉线 绳､钢尺､吊 线
10	Wall gluing treatment 墙体打胶处理	Spread glue on connection parts between door and windows and openings, between walls and between wallboards and the roof for sealing. The glue shall be even without interruption, shall not affect the overall appearance. No transparent is allowed. 门窗与包口之间､墙体与墙体之间 连接部位､墙板与顶板连接部位必 须打密封胶｡打胶应均匀连续,不 影响整体美观,不许有透亮现象;	Visual inspection 目测
11	Pressed parts 压型件	Interfaces of pressed parts shall be neat, no obvious deformation. 压型件接口应整齐,无明显变形现 象;	Visual inspection 目测
12	Roof fasten 屋面固定	When fixes the roof boarding (tiles), the self tapping screw shall be fixed on the peak and be equipped with a saddle pad; Roof boarding shall have no obvious deformation for the position of self tapping screw. 固定屋面板(瓦)时自攻钉应打在 波峰上,并配置马鞍垫,打自攻钉 位置的屋面板(瓦)波峰不得有明 显变形现象;	Visual inspection 目测
13	Roof gluing treatment 屋面打胶处理	Roof rivet connection part shall conduct gluing treatment, self tapping screw surroundings and upper end of saddle pad shall have gluing treatment. 屋面铆钉连接部位应进行打胶处理, 自攻螺钉周围和马鞍垫上端部位应 进行打胶处理｡	Visual inspection 目测
14	Supporting facility 配套设施	Supporting facilities in the building, such as water, electricity, sanitary appliance, etc. must be installed in accordance with regulations, design drawings and use requirements. 房屋的配套设施如:水､电､洁具 等,安装必须规范,符合设计图纸 和使用要求｡	Complete inspection 检查全部

Note: 1. In case of two (included) or more items above fail to meet the requirements, the building acceptance shall be unqualified.

          2.Use correct installation tools and safety protective articles when conducting building installation; shall strictly comply with safety operation procedures, shall not operate in violation of rules and regulations.

Installation leader signature                          time of self inspection 

Acceptance personnel signature                   time of acceptance 

    Prepared by :            Reviewed by:                Date: