Cold Rolled Steel Pipes Double Pipe Heat Exchanger for and Punching Processing Service

| Stainless steel heat exchanger welded pipes | | | | | ||||
| Material Grade | 201,202,304,316,316L,430,409L,430,410,420J1,420J2 | | | | ||||
| Main Material | a) 201 (Ni0.8%-1%) b) 202 (Ni: 3.0%-4.0%) c) 304 (Ni: 8% Cr: 18%) d) 316 (Ni: 10% Cr: 18%) | | | | ||||
| Size Range | 139mm-1600mm ETC. | | | | ||||
| Thickness | 0.5-30mm | | | | ||||
| Length | 6m or as customers' request | | | | ||||
| Tolerance | a) Outer Diameter: +/- 0.2mm | | | | ||||
| | b) Thickness: +/- 0.02mm | | | | ||||
| | c) Length: +/- 5mm | | | | ||||
| Surface | 180G, 320G Satin/Hairline 400G, 600G Mirror finish | | | | ||||
| Application | handrail,railing, staircase, weldmesh screen,door,window, balcony,fence,bench,furniture,etc | | | | ||||
| Test | Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT | | | | ||||
| | Tensile Strength | ≥535 | ≥520 | ≥520 | ||||
| | Yield Strength | ≥245 | ≥205 | ≥205 | ||||
| | Extension | ≥30% | ≥30% | ≥35% | ||||
| | Hardness (HV) | <105 | <100 | <90 | ||||
















