Cangzhou Zhongrun Steel Pipe Co., Ltd., founded in 1994, is located in the beautiful coastal city - Changzhou.The main products:seamless steel pipe,ERW line pipe,LSAW,SSAW and Alloy steel pipe,annual sales of 100,000 tons.
In 2012 my company invested Hengchang Steel Pipe Manufacturing Co., Ltd.in Cangzhou City, the company covers an area of 100 acres, a total of eight pipe production line,annual production of about 40,000 tons.
My company to provide you with quality products and dedicated service, welcome to visit our company.
The following is the standard data, we will do our best to follow the customers' requirements and the agreement to perform.
| Production | ASTM A53 GrB seamless steel pipe |
| Process of manufacture | Cold drawing or Hot rolled |
| Type of length | Fixed ruler and Double ruler |
| Inspection and Test | Tensile test,Hydrostatic test,Non-destructive inspection and as agreed |
OD and WT tolerance
| Pipe Sizes | Tolerances(mm) | |
| OD,D(mm) | ≤48.3 | ±0.4 |
| ≥48.3 | ±1%D | |
| WT,t(mm) | ±12.5%t | |
Chemical composition
| Steel grade | C(%)≤ | Mn(%)≤ | P(%)≤ | S(%)≤ | Cr(%)≤ | Cu(%)≥ | Mo(%)≤ | Ni(%)≤ | V(%)≤ |
| B | 0.3 | 1.2 | 0.05 | 0.045 | 0.4 | 0.4 | 0.15 | 0.4 | 0.08 |
Tensile properties and Delivery condition
| Steel grade | Yield strength (Mpa) | Tensile strength(Mpa) | Elongation(%) | Delivery Condition |
| B | ≥240 | ≥415 | 20 | Annealed |
Seamless steel pipe production flow chart
