ASTM Standand Stainless Steel Pipe Fittings Butt Welded Industrial Ss End Cap

ASTM Standand Stainless Steel Pipe Fitting Butt Welded Industrial Ss End Cap

1. Strict control of raw materials procurement, chemical composition, mechanical properties of materials 100% inspection;
2. The blanking material in strict accordance with the standard or drawing check, check mark is complete right. Under the unmarked material can't;
3. Use cold or hot pressing processing way, don't change the material performance, the evenness of the thickness of the material;
4. The first cap after molding, using qualified measuring diameter, ovality, height, thickness, etc.; Ensure that conform to the requirements of the standard or drawing for mass production;
5. According to the requirements of the different material, heat treatment was carried out on the tube cap to improve the mechanical properties of the product;
6. The flat, cut head by line cutting, after cutting Angle measurement by qualified universal Angle ruler;
7. For each tube cap, pickling, remove surface stains, scale, etc;
8. For each batch production cap for a percentage of the UT/MT/PT/RT sampling, to ensure quality；
9. Use a magnifying glass for each cap appearance inspection, pipe surface is smooth, no oxide coating. Scratches depth < 5% is greater than 0.5 mm in wall thickness, can not have scar, folding, folding, delamination,defects. Depth of more than 10% of nominal wall thickness or greater than 1.5 mm mechanical scratches and pits shall be removed.
10. Record each cap size measured values, traceability.
11. The size of the cap and standard: DN15 ~ DN1200, SCH5 ~ SCH160, ASME/DIN/BS/JIS/GOST