SHANDONG TONGMAO SPECIAL STEEL CO., LTD
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ERW Stainless Steel Straight Seam Welded Steel Pipes 304/304L/316/316L/321 Q215A Q235B 0.1mm Thick
Welded steel pipe:
Welded steel pipe refers to steel strip or steel plate bending deformation into circular, square and other shapes after welding, the surface of the joint steel pipe. Compared with seamless steel tube, welded steel tube has low cost and high production efficiency. The blank is steel plate or strip steel. Welded steel tube has good corrosion resistance in acid environment.
Classification of welding methods:
According to different welding methods, it can be divided into arc welding pipe, high frequency or low frequency resistance welding pipe, gas welding pipe, furnace welding pipe, bandi pipe, etc.
Electric welded steel tube: used for oil drilling and machinery manufacturing.
Furnace welding pipe: can be used as water gas pipe, straight welded pipe for high pressure oil and gas transmission; Spiral welded pipe is used for oil and gas transportation, pipe pile, bridge pier and so on.
Classification according to weld shape
Can be divided into straight seam welding pipe and spiral welding pipe.
Product Description:
| Grade | Compositionnominal wt% | Elongation % | Hardness |
| 301 Annealed 1/4H 1/2H FH | C .15, Mn 2.0, P .045, S 0.3, Si .75, Cr 16-18, Ni 6-8, N .1 | 40 | 95 Rb |
| 302 | C 0.15, Mn 2.0, P .045, S .03, Si .75 Cr 17-19, Ni 8-10, N .1 | 40 | 92 Rb |
| 303 | C 0.15, Mn 2.0, P .045, S .03, Si .75 Cr 17-19, Ni 8-10, N .1 | 30-50 | 92 Rb |
| 304 | C .08, Mn 2.0, P .045, S .03, Si .75 Cr 18-20, Ni 8-10.5, N .10 | 40 | 92 Rb |
| 304L | C .03, Mn 2, P .045, S .03, Si .75, Cr 18-20, Ni 8-12, N .1 | 40 | 92 Rb |
| 305 | C .12, Mn 2.0, P .045, S .03, Si .75, Cr 17-19, Ni 10.5-13, | 40 | 88 Rb |
| 309/309S | Type 309 - C .2, Mn 2.0, P .045, S.03, Si .75 Cr 22-24, Ni 12-15, Fe bal Type 309S - C .08, Mn 2.0, P .045, S .03, Si. 75, Cr 22-24, Ni 12-15, Fe Bal | 49/ 44.6 | - |
| 310L | Mn 1.10, Cr 24.5, Ni 20.5 (nominal) | 40 | 95 Rb |
| 310 310S | 310: C .25, Mn 2, P 0.045, S 0.03, Si 1.5, Cr 24-26, Ni 19-22, Fe balance 310S: C 0.08, Mn 2, P 0.045, S 0.30, Si 1.5, Cr 24-26, Ni 19-22, Fe balance | 45/42/6 | - |
| 316 | C .08, Mn 2.0, Si .75, Cr 16-18, Ni 10-14, Mo 2-3, P .045, S .03, N .1, Fe Bal | 40 | 95 Rb |
| 316L | C .03, Mn 2.0, Si .75, Cr 16-18, Ni 10-14, Mo 2-3, P .045, S .03, N 0.1, Fe Bal | 54 | 95 Rb |
| 316Ti | C .08, Mn 2.0, Si .75, Cr 16-18, Ni 10-14, Mo 2-3, P 0.045, S 0.03, N 0.1, Ti 0.15-0.70, balance Fe | 248 | 76 Rb |
| 317 | Type 317 - C .08, Mn 2.0, Si .75, Cr 18-20, Ni 11-15, Mo 3-4, P .045, S .03, N .10, Fe Bal | 35 | 95 Rb |
| Wall Thickness | 2-5.4mm/Can be customized |
| Brand | TONGMAO |
| Length | 6m or as Your Requirements |
| Payment | T/T,L/C,Western Union,Moneygram |
| Transport Package | Standard Export Packaging |
| Origin | Liaocheng China |
| Shipment port | Qingdao |
| Outer Diameter | DN15-DN150 |
| Standard | GB/T,ASTM, JIS |
| Date of Delivery | 7-15 Days After Receiving Your Dosit |
| Specification | Q195, Q235, Q345 |
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FAQ
Can you send products to my country?
Sure, we can. If you do not have your own ship forwarder, we can help you.
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Yes,we promise to provide best quality products and delivery on time no matter if the price change lot or not.Honesty is our company's tenet.
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And you can also find our contact information on contact page.
How do you make our business long-term and good relationship?
1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them