| After-sales Service: | 24hours |
|---|---|
| Warranty: | 1 |
| Type: | Seamless |
| Technique: | Cold Drawn |
| Material: | Stainless Steel |
| Surface Treatment: | Polished |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier What is thick wall steel pipe?
The steel pipe with the ratio of the outer diameter of the steel pipe to the wall thickness is less than 20 is called the thick-walled steel pipe.
Application of thick-walled seamless steel pipe:
Mainly used as petroleum geological drilling pipe, cracking pipe for petrochemical industry, boiler pipe, bearing pipe and high-precision structural pipe for automobile, tractor, aviation, etc.
The greatest advantage of seamless pipes is their durability. For this reason, pipes of this type are an indispensable element in the construction of installations, i.e. for the conduction of gases and liquids, heat exchangers, coils, recuperators, condensers, evaporators, heaters ETC.
Manufacturing process of thick-walled seamless steel pipe:
Hot rolling (extruded seamless steel pipe): round tube billet → heating → perforation → three-roll cross-rolling, continuous rolling or extrusion → pipe removal → sizing (or diameter reduction) → cooling → straightening → hydraulic test (or flaw detection)→marking→warehousing
The raw material for rolling seamless tubes is a round tube blank, which is cut by a cutting machine into a billet with a length of about 1 meter, and sent to a furnace for heating through a conveyor belt. The billets are fed into the furnace and heated at about 1200 degrees Celsius. The fuel is hydrogen or acetylene. Furnace temperature control is a critical issue. After the round tube blank is released, it will be perforated by a pressure perforator. Generally, the more common punching machine is the conical roller punching machine. This kind of punching machine has high production efficiency, good product quality, large amount of perforation and expansion, and can wear a variety of steel grades.
After perforation, the round tube blank is successively cross-rolled, continuously rolled or extruded by three rolls. After extrusion, the tube should be removed and sizing. The sizing machine rotates into the steel billet at high speed through the conical drill bit to punch holes to form steel pipes. The inner diameter of the steel pipe is determined by the outer diameter of the drill bit of the sizing machine. After the steel pipe is sizing, it enters the cooling tower and is cooled by water spray. After the steel pipe is cooled, it will be straightened.
Technical data:
Length: Max to 18000mm
Outside diameter: 6-1016mm
Wall thickness (WT): 1-65mm
Steel grade: austenicit steel
(super) duplex steel
nickel alloy steel
We are a long established supplier of stainless steel to all industries.
1.Austenitic stainless-steel: TP304/L, TP316L, 310S(2520,S31008), 904L(UNSN8904, DIN1.4539), 316Ti, TP317L, TP347H, TP321, 253MA, TP309, 254SMO, 314......
2.Duplex stainless steel : UNS S32205(2205).S32750,S32760......
3.Nickel alloy : UNS N04400, Inconel 601, INCONEL625, 718, 800, C-276, Hastelloy C22 ......
In addition to our standard products, we also have a vast range of stainless steel tubing.
Stainless Steel is a widely used material across industries because of its corrosion resistance and high versatility. Notably, this tough metal requires relatively low maintenance.
The grade of steel required depends on your application and use.
We are able to provide you SRL/DRL length, or cut to length, also ship the goods within 1 week after production.
| COMPLIANCE WITH STEEL GRADES | |||
| AISI | EN | DIN | GOST |
| 301 | 1431 | X10CrNi18 -8 | |
| 301LN | 1,4318 | X2CrNiN18 -7 | |
| 304 | 1,4301 | X5CrNI18 -10 | 08Х18Н10 |
| 304L | 1,4306 | X2CrNi19 11 | 03Х18Н11 |
| 304L | 1,4307 | 04Х18Н10 | |
| 304LN | 1,4311 | ||
| 305 | 1,4303 | X4CrNi18 -12 | 12Х18Н12 |
| 309 | 1,4828 | X15CrNiSi20 -12 | 20Х20Н14С2 |
| 309S | 1,4833 | ||
| 310S | 1,4845 | X12CrNi25 -21 | 20Х23Н18 |
| 314 | 1,4841 | X15CrNiSi25 20 | 20Х25Н20С2 |
| 316 | 1,4401 | X5CrNiMo17 -12-2 | 10Х17Н13М2 |
| 316L | 1,4435 | X2CrNiMo18 -4-3 | 03Х17Н14М2 |
| 316TI | 1,4571 | X6CrNiMoTi17 -12-2 | 10Х17Н13М2Т |
| 316HMo | 1,4436 | ||
| 316L | 1,4404 | X2CrNiMo17 -12-2 | 04Х17Н13М2 |
| 316LHMo | 1,4435 | ||
| 316LN | 1,4406 | ||
| 316LHMo | 1,4429 | ||
| 317L | 1,4438 | ||
| 321 | 1,4541 | X6CrNiTi18 -10 | 08Х18Н10Т |
| 321H | 1,4878 | X12CrNiTi18 -9 | 12Х18Н10Т |
| 347 | 1455 | X6CrNiNb18 -10 | |
| N08904 | 1,4539 | X1NiCrMoCu25 -20-5 | |
| S31726 | 1,4439 | X2CrNiMoN17 -3-5 | |
| S31803 | 1,4462 | X2CrNiMoN22 -5-3 | |
| S34565 | 1,4565 | X3CrNiMnMoNbN 23 - 17-5-3 |
|
Suppliers with verified business licenses
Audited Supplier 
){kind=link}
){kind=link}