Special Steel Structure Emergency Modular Bridge Prefab Pedestrian Bridge Corrosion Resistance

Special Steel Structure Pedestrian Bridge/qualified Steel Structure Pedestrian Bridge

Quality Control Process of Jiangsu Zhonghai Bridge Equipment Co., Ltd.

Jiangsu Zhonghai Bridge Equipment Co., Ltd. ensures the high quality and reliability of its products in domestic and foreign markets through strict quality control processes. The following are the specific measures and processes of its quality control:

1. **Strict Quality Supervision and Inspection**
All products of the company are strictly supervised and regularly inspected by the Scientific Research Station of the General Armament Department to ensure that each product meets strict quality standards. In addition, the company has successfully passed the ISO9001:2000 international quality system certification and was awarded the honorary title of Quality System Management Demonstration Unit by the China Quality Observation Station.

2. **Advanced Production Technology**
The company has introduced automatic welding robot technology to ensure that the connection of each welding part is accurate and correct, and the welding accuracy is controlled within 0.3 mm. This technology not only improves production efficiency, but also significantly reduces human errors, making product quality more stable.

3. **Comprehensive Testing Process**
All major welds are ultrasonically inspected to ensure full compliance with welding standards. In addition, the steel products exported by the company are tested by SGS to ensure full compliance with American and European standards. The Bailey bridges produced by the company have been tested by professional testing agencies and fully meet the design standards.

4. **Full process control**
The company strictly follows the quality policy of "excellent quality and user priority", implements full process control according to ISO9001 standards, and organizes design, construction, raw material procurement and inspection according to quality requirements. The specific commitments are as follows:
- Guarantee that the equipment supplied is a brand-new, advanced, mature, complete, safe and reliable high-quality performance product, and the technical and economic performance of the equipment meets the national industry standards.
- The production of products complies with national industry standards and is strictly produced according to the requirements of Party A.
- The products supplied are subject to three guarantees, with a warranty period of half a year. All items that are not damaged by human factors during the warranty period will be replaced.
- Provide technical services to users free of charge (including drawings and technical information, external dimensions, etc.).
- Deliver goods to the site safely and on time.

5. **Continuous technological innovation**
The company continues to accelerate the company's technological innovation capabilities, focusing on corporate technology research and development, production processes and product detail optimization. Through technological innovation, the company has not only improved product quality, but also increased production efficiency, further consolidating its position in the industry.

Through the above strict quality control process and advanced production technology, Jiangsu Zhonghai Bridge Equipment Co., Ltd. ensures the high quality and reliability of its products, and has won wide recognition and trust from domestic and foreign customers.

Specifications:

​

CB321(100) Truss Press Limited Table
No.	Lnternal Force	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	DDR	SSR	DSR	TSR	DDR
321(100)	Standard Truss Moment(kN.m)	788.2	1576.4	2246.4	3265.4	1687.5	3375	4809.4	6750
321(100)	Standard Truss Shear (kN)	245.2	490.5	698.9	490.5	245.2	490.5	698.9	490.5
321 (100) Table of geometric characteristics of truss bridge(Half bridge)
Type No.	Geometric Characteristics	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	DDR	SSR	DSR	TSR	DDR
321(100)	Section properties(cm3)	3578.5	7157.1	10735.6	14817.9	7699.1	15398.3	23097.4	30641.7
321(100)	Moment of inertia(cm4)	250497.2	500994.4	751491.6	2148588.8	577434.4	1154868.8	1732303.2	4596255.2

​​

CB200 Truss Press Limited Table
NO.	Internal Force	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	QS	SSR	DSR	TSR	QSR
200	Standard Truss Moment(kN.m)	1034.3	2027.2	2978.8	3930.3	2165.4	4244.2	6236.4	8228.6
200	Standard Truss Shear (kN)	222.1	435.3	639.6	843.9	222.1	435.3	639.6	843.9
201	High Bending Truss Moment(kN.m)	1593.2	3122.8	4585.5	6054.3	3335.8	6538.2	9607.1	12676.1
202	High Bending Truss Shear(kN)	348	696	1044	1392	348	696	1044	1392
203	Shear Force of Super High Shear Truss(kN)	509.8	999.2	1468.2	1937.2	509.8	999.2	1468.2	1937.2

​​

CB200 Table of Geometric Characteristics of Truss Bridge(Half Bridge)
Structure	Geometric Characteristics
	Geometric Characteristics	Chord Area(cm2)	Section Properties(cm3)	Moment of Inertia(cm4)
ss	SS	25.48	5437	580174
	SSR	50.96	10875	1160348
DS	DS	50.96	10875	1160348
	DSR1	76.44	16312	1740522
	DSR2	101.92	21750	2320696
TS	TS	76.44	16312	1740522
	TSR2	127.4	27185	2900870
	TSR3	152.88	32625	3481044
QS	QS	101.92	21750	2320696
	QSR3	178.36	38059	4061218
	QSR4	203.84	43500	4641392

​

Advantage

Possessing the features of simple structure,
convenient transport, speedy erection
easy disassembling,
heavy loading capacity,
great stability and long fatigue life
being capable of an alternative span, loading capacity