Good Quality Seamless Black Steel Pipe - 4140 steel round bar for mechanical using – RELIANCE Detail:
Product Description
| standard | BS4449:1997,GB1449.2-2007,JIS G3112-2004, ASTM A615-A615M-04a |
| grade | BS4449, Gr460B, GB1449.2, HRB335, HRB400, HRB500, HRB500E, ASTM A615, GR40/GR60, JIS G3112, SD390, SD360 |
| size | 10mm, 12mm, 13mm, 14mm, 16mm, 20mm, 22mm, 25mm, 30mm, 32mm, 40mm,50mm, etc.. |
| length | 4-12m or according to customer’s requirement |
| application | civil engineering construction,such as housing, bridges,road, etc |
| Delivery | Normally 7-15 days after receive deposits or L/C at sight. |
| package | Packed in bundle, standard seaworthy package or customers’ requirements. |
|
Grade |
Yield strength REL(RP0.2),MPa |
Tensile strength Rm,MPa |
Elongation at failure A/% |
Uniform elongation Agt/% |
Stressel relaxation |
|
|
Original stress |
Relaxation rate after 1000hr/% |
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PSB785 |
≥785 |
≥980 |
≥7 |
≥3.5 |
0.8R |
≤3 |
|
PSB830 |
≥830 |
≥1030 |
≥6 |
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|
PSB930 |
≥930 |
≥1080 |
≥6 |
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|
PSB1080 |
≥1080 |
≥1230 |
≥6 |
|
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|
PSB500 |
≥500 |
≥630 |
≥10 |
≥2.5 |
|
|
Company Information
Tianjin Reliance Company , is specialized in manufacturing steel pipes. and many special service can be done for you. such as ends treatment, surface finished, with fittings, loading all kinds of sizes’ goods in container together, and so on.
Our office is located in Nankai distric, Tianjin city, near Beijing, the capital of China, and with excellent location.It just takes 2 hours from beijing international airport to our company by high speed rail.and the goods can be delivered from our factory to Tianjin port for 2 hours. you can take 40 minutes from our office to Tianjin beihai international airport by subway.
Export record:
India,Pakistan,Tajikistan,Thailand,Myanmar,Australia,Canada,United States,United Kingdom,Kuwait,Mauritius,Morocco,Paraguay,Ghana,Fiji,Oman,Czech Republic,Kuwait,Korea and so on.
Packaging & Shipping
Our Services:
1.we can do special orders accoding to the customers’ requestments.
2.we also can provide all kinds of sizes’ steel pipes.
3.All the production process are made under the ISO 9001:2008 strictly.
4.Sample: free and similar sizes ones.
5.Trade terms: FOB /CFR/ CIF
6.Small order: welcome
Product detail pictures:

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We're going to commit ourselves to giving our esteemed customers along with the most enthusiastically considerate providers for Good Quality Seamless Black Steel Pipe - 4140 steel round bar for mechanical using – RELIANCE, The product will supply to all over the world, such as: Mozambique , Rotterdam , Lithuania , Our well-equipped facilities and excellent quality control throughout all stages of production enable us to guarantee total customer satisfaction. If you are interested in any of our products or would like to discuss a custom order, please feel free to contact me. We are looking forward to forming successful business relationship with new clients around the world.
Timely delivery, strict implementation of the contract provisions of the goods, encountered special circumstances, but also actively cooperate, a trustworthy company!












