AP pipe is a stainless steel pipe that softens at high temperature to eliminate internal stress. Using nitric acid/hydrofluic acid mixed solution to remove the oxide scale generated by annealing to fm a passivation layer. Unifm matte silvery white (no metallic luster). The surface roughness is high (usually Ra>0.8um), there may be slight texture.
Outer diameter: 3~219mm; Wall thickness: 0.5mm-6mm; Length: 1000mm-12000mm (can be measured); Main materials: 304, 304L, 316L, 316Ti Ti, 321, 347H, 310S, 904L, 2205, 2507, 2520, C276, etc. Implementation stards: ASTMA269, A213, A270, GB/T14976, GB/T13296.DIN2391, EN10216-5; Inspection: eddy current non-flaw detection+water pressure test; Packaging: dinary packaging; Uses: pipes f building structures, dinary fluid transptation non-high purity medium pipes in chemical equipment;
