Main application:
1) Applications of the automotive industry with the stainless steel tube
2) water and gas and other fluid transport applications on stainless steel
3) stainless steel applications in electronics, instrumentation, and metallurgical industries
4) the development of petrochemical industry applications of stainless steel pipe
5) nuclear power plants and other power stations on the stainless steel tube applications Airlines, Air to industry for stainless steel pipe applications
Production range:
1. Main steel types and typical grades:
Item No. | Steel types | (AISI) Typical steel codes |
1 | Austenite | 301, 310S, 304, 304L, 304H, 316, 316L, 316Ti, 317, 317L, 321, 321H, 347H, 904L |
2 | Duplex | S31803, S32205, S31500, S31750, S31760, S31900, S32304 |
3 | Incoloy | 800, 800H, 800HT, 825, 901, 925, 926 |
4 | Inconel | 600, 601, 625, 718 |
5 | Monel | 400, K500 |
6 | Nickel | 200, 201 |
7 | Hastelloy | B, B-2, C-4, C-22, C-276 |
2. Main Production Standard:
Item No. | Standard type | Standard |
Stainless steel seamless pipes & tubes(Cold drawn, Cold rolled, Bright precision) | EN | EN 10216-5, EN 10216-2 |
DIN | DIN 17456, DIN 17458 | |
ASTM/ASME | A213, A269, A511, A789, A790, A335, A376 SA213, SA312, SA789, SA790, SA335, SA376 SB161, SB163, SB167, SB338, SB668, SB677 | |
JIS | JIS G3459, G3463 | |
GB | GB/T 14975, T14976, GB13296, GB5310,GB9948 |
3. Production specification:
Item No. | Products | Specification |
1 | Cold drawn pipes & tubes | (OD) φ6 - φ1016 mm, (WT) φ1 - φ50.01mm |
2 | Cold rolled pipes & tubes | (OD) φ16 - φ325 mm, (WT) φ1 - φ30mm |
Products | Diameter(mm) | Thickness(mm) | Length(m) |
Stainless steel seamless pipes & tubes(Cold drawn, Cold rolled, Bright precision) | 6 - 20 | 0.8 - 3.5 | Max: 240 |
20 - 32 | 1.5 - 8 | Max: 24 | |
32 - 159 | 1.5 - 35 | Max: 12 | |
168 - 325 | 3 - 40 | Max: 12 | |
325 - 830 | 5.5 - 45 | Max: 8.5 |
EFW Electric Fusion Welded Pipe
EFW is Electric Fusion Welding, a welding process without filler.
Also, EFW (Electric Fusion Welded) Pipe in terms of ferrous material specifications under ASME implies filler metal added (SA-691 and SA-671).
There are three processes for metallic pipe manufacture. Seamless (SMLS) Pipe is formed by drawing a solid billet over a piercing rod to create the hollow shell.
Seamless Pipe provides the most reliable pressure retaining characteristics, and is often more easily available than welded pipe.
Welded, Electric Resistance Welded (ERW) and Electric Fusion Welded (EFW) Pipe is formed by rolling plate and welding the seam. The weld flash can be removed from the outside or inside surfaces using a scarfing blade. The weld zone can also be heat treated, so the seam is less visible.
Welded Pipe often has tighter dimensional tolerances than seamless, and can be cheaper if manufactured in the same quantities. Large diameter Pipe (about 10 inches or greater) may be ERW, EFW or Submerged Arc Welded (SAW) Pipe.
