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[China]
Trade Verify
Address: H.Q.803, No.18 Baosheng Road, Songjiang, Shanghai, China
Contact name:Will Ma
Spezilla Tube Co., Ltd. (Shanghai) |
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Verified Suppliers
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ASTM A778 Welded stainless steel pipe Not Annealed 1/2'' - 24'' 12000MM Max
Manufacture:
In order to comply with this specification welded stainless steel
tube must be manufactured by an automatic welding process using no
filler metal, or it must be a seamless pipe. If a welded stainless
steel tube has a nominal pipe size greater than 14'' then it may be
constructed from two longitudinal sections, and hence have two
longitudinal welds. The pipe may be either hot finished or cold
finished.
Finish and repair:
The surface of the welded stainless steel tube must be clean and
free of scale and contaminating iron particles. It can be bright
annealed but may be pickled, blasted or can be passivated.
Repair by welding. Permitted on <−20% of the weld seam length of
welded stainless steel tube if >−NPS 6 and having a wall
thickness >−0.200 in (mm). Tungsten-arc welding process is used
for repairs, with filler metal to a grade as specified in A 312
(not repeated here). Weld repairs must be identified on the pipe
and in test certificate.
Stainless Steel Welded Pipe | ||
|---|---|---|
Diameter of Stainless Tube | 1/8″ thru 14″ / light and heavy wall thickness available | |
300 Series Stainless Steel Grades | 304 – 304/L – 304H – 309/S – 309H – 310/S – 310H – 316L – 317L – 321 – 321H – 347 – 347H | |
400 Series Stainless Steel Grades | 410 | |
Duplex Stainless Steel Grades | Duplex 2003 – Duplex 2101 – Duplex 2205 – Duplex 2304 – Duplex 2507 – Zeron 100 | |
Nickel Alloy Grades | Alloy 20 – 200 – 400 – 600 – 601 – 625 – C276 – C22 | |
6 Moly Grades | 254SMO – AL6XN | |
SPEZILLA supplies welded tube per ASTM A 788 as rolled and welded. We supply common grades of stainless such as 304/304L and 316/316L in standard tube sizes and wall thicknesses, as well as more challenging stainless welded tube requirements including 304H, 316H, 309/S, 310/S, 317/L, 321/H, 347/H, 410, 410S, Duplex 2205, Duplex 2507, and more.
We can even supply material with wall thicknesses up to 3″ thick! Diameters sizes range from 1/8″ up to 96″. All welded tube products can be cut to size. Specialty testing services can also be provided. Stainless tubes can be polished per request and cut to size.
Nominal Wall Thickness:
NPS Designator | Outside Diameter in. | Schedule 5S in. | Schedule 10S in. | Schedule 40S in. | Schedule 80S in. |
|---|---|---|---|---|---|
| 1/4 | 0.540 | 0.065 | 0.088 | 0.119 | |
| 3/8 | 0.675 | 0.065 | 0.091 | 0.126 | |
| 1/2 | 0.840 | 0.065 | 0.083 | 0.109 | 0.147 |
| 3/4 | 1.050 | 0.065 | 0.083 | 0.113 | 0.154 |
| 1.0 | 1.315 | 0.065 | 0.109 | 0.133 | 0.179 |
| 1 1/4 | 1.660 | 0.065 | 0.109 | 0.140 | 0.191 |
| 1 1/2 | 1.900 | 0.065 | 0.109 | 0.145 | 0.200 |
| 2 | 2.375 | 0.065 | 0.109 | 0.154 | 0.218 |
| 2 1/2 | 2.875 | 0.083 | 0.120 | 0.203 | 0.276 |
| 3 | 3.500 | 0.083 | 0.120 | 0.216 | 0.300 |
| 3 1/2 | 4.000 | 0.083 | 0.120 | 0.226 | 0.318 |
| 4 | 4.500 | 0.083 | 0.120 | 0.237 | 0.337 |
| 5 | 5.563 | 0.109 | 0.134 | 0.258 | 0.375 |
| 6 | 6.625 | 0.109 | 0.134 | 0.280 | 0.432 |
| 8 | 8.625 | 0.109 | 0.148 | 0.322 | 0.500 |
| 10 | 10.750 | 0.134 | 0.165 | 0.365 | 0.500 |
| 12 | 12.750 | 0.156 | 0.180 | 0.375 | 0.500 |
