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.

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