Stainless Steel Seamless Pipe is made of stainless steel ingot or solid pipe blank through perforation, after a serious manufacturing processes such as hot rolling, cold rolling or cold drawing. It is widely used in various fluid transport projects for the Oil Gas or water, also the manufacture of mechanical parts and engineering structures.
HT PIPE offers all types of Stainless Steel Seamless Pipe for the Oil and Gas and Refinery Industry as the Pipe Suppliers.
We offer
Seamless Stainless Steel Pipe: 304 stainless steel seamless pipe, 304l ss seamless pipe, 316 seamless pipe, 1.4404 316l seamless pipe, 1.4571 316Ti pipe, 317 ss pipe, 1.4438 317l inox pipe, 310S seamless pipe, 1.4541 321 ss pipe, 254smo pipe, ect.
Seamless Duplex Steel Pipe: S31803 seamless pipe, 2205 duplex pipe, 1.4462 pipe
Seamless Super Duplex Steel Pipe: S32750 duplex pipe, 1.4410 duplex 2507 pipe, super duplex S32760 pipe
Our stainless steel seamless pipes are manufactured in accordance with:
ASTM A312 Seamless Austenitic Stainless Steel Pipes
ASTM A213 Seamless Austenitic Alloy-Steel Boiler, Super Heater and Heat-Exchanger Tubes
ASTM A269 Seamless Austenitic Stainless Steel Tubing for General Service
ASTM B677 Seamless pipe covers in UNS N08925, UNS N08926
ASTM A789 Seamless Duplex Stainless Steel Tubing for General Service
ASTM A790 Seamless Duplex Stainless Steel Pipes
Dimensions in accordance with:
ANSI B36.19
Seamless stainless steel pipe specification and size
| Standard |
Dimension |
Steel Grade |
| ASTM A312 |
OD: 1/4"-20"
WT: SCH5S-SCH80S |
TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti,
TP317, TP317L, TP321, TP321H, TP347, TP347H, S31254, 904L |
| ASTM A213 |
OD: 6.0-50.8mm
WT: 0.8-10.0mm |
TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti,
TP317, TP317L, TP321, TP321H, TP347, TP347H, S31254, 904L |
| ASTM A269 |
OD: 6.0-50.8mm
WT: 0.8-10.0mm |
TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti,
TP317, TP317L, TP321, TP321H, TP347, TP347H, S31254 |
| ASTM A789 |
OD: 19.0-60.5mm
WT: 1.2-5.0mm |
S31803, S32205, S32750,S32760 |
| ASTM A790 |
OD: 3/4"-10"
WT: SCH5S-SCH80S |
S31803, S32205, S32750,S32760 |
EN 10216
DIN 17456
DIN 17458 |
OD: 6.0-530.0mm
WT: 0.8-34.0mm |
1.4301, 1.4307, 1.4541, 1.4401, 1.4404,
1.4571, 1.4878, 1.4432, 1.4462 |
Seamless stainless steel pipe Manufacturing types and processes
1. Seamless Hot Rolling Processes
Round Pipe Billet → Heating → Perforation → Three Roll Skew Rolling, Continuous Rolling or Extrusion → Off Pipe → Sizing (Or Reducing Diameter)→ Cooling → Billet → Straightening → Water Pressure Test ( Or Flaw Detection) → Marking → Storage
2. Seamless Cold Rolling (Cold drawn) Processes
Round Pipe Billet → Heating → Perforation → Head → Annealing → Pickling → Oil (Copper) → Multi Pass Drawing (Cold Rolling) → Billet → Heat Treatment → Straightening → Water Pressure Test → Marking → Storage
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