Seamless Stainless Steel Pipe
Seamless stainless steel pipe is the tube made from stainless steel bar perforated and then cold rolled or cold drawn. Compared with welded stainless steel pipe, seamless pipe has a flat surface, uniform metallographic organization, and much higher corrosion resistance and pressure and high temperature resistance than welded pipe because there is no welded seam. However, the price of smls ss pipe is usually higher and the delivery time is slower than that of welded pipe.
Stainless steel seamless pipe is our strenght product, we are able to deliver it from ex-stock for small quantity. The material includes stainless steel 304/L, 316/L, 310S, 321, 317L, 347H, duplex 2205, 2507 etc.
The Manufacturing Process of SS SMLS Pipe
Cold Rolling and Cold Drawing
Cold Rolling is a preferred production process for high precision seamless tube. Most of our heat exchanger tubing and mechanical tube are made by cold rolling. This technique provides a high forming rate, narrow tolerances and good turnouts. Now the biggest diameter we can get is 168.3mm for this process.
Cold Drawing is the general process for our tube and pipe. Pipe&tubes from this process can be got a a very narrow tolerance ranges, and keep the chemical element well. Additionally, the cold drawing process is the perfect choice for situations which place high requirements on the quality of the surface structure.
Available Grade:
- Stainless: TP304,304L,304H,316,316L,316H,316Ti,317,317L,309S,310S,310H,347,347H,321,321H, 904L, S31254
(mat.1.4301,1.4307,1.4948,1.4401,1.4404,1.4571,1.4438,1.4438, 1.4833,1.4841,1.4845,1.4845,1.4450,1.4541,1.4878,1.4539, 1.4547/254SMO) etc. - Duplex: UNS S31803 , S32205, S32750，S32760,S32304 (Mat.1.4462,1.4410,1.4501,1.4362)etc.
- Alloy: Monel 400, Inconel 600, Inconel 625, Incoloy 800, Incoloy 800H, Incoloy 825, Hastelloy B2, Hastelloy C-22, Hastelloy C-276, 15-5PH, 17-7PH,Cu70Ni30(C71500/B30), Cu90Ni10(C70600/B10)etc.
- Stainless: TP304,304L,304H,316,316L,316H,316Ti,317,317L,309S,310S,310H,347,347H,321,321H, 904L, S31254
(If your required is not found here, please make a special enquiry immediately. Our team will reply in time.)
Surface Finishes:
- Pickling finish
- Bright annealed finish
- Mirror finish (polished)
- Sand-blast finish
Dimension of Seamless Stainless Steel Pipe
- Outer diameters is from 6 up to 914 mm for seamless pipe (0.24 up to 36 inches)
- Wall thicknesses from 0.5 up to 68 mm (SCH10S, STD/SCH40S, SCH80S/XS, SCH160, SCHXXS).
Application
Stainless steel pipe can resist high temperatures for cleanliness and maintain the purity of materials which contact stainless steel directly. Stainless steel pipe and tubing are used in chemical plants, petroleum refining, marine building, LNG, medical, machinery Manufacturing etc.
- Petroleum refining
- Marine and Ship Buidling
- Chemical plants
- Fertilizer plant
- LNG construction
- Machinery Manufacturing
- Civil Engineering
- Water treatment
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