Quality standards for angle steel and matters needing attention when purchasing and accepting them

　　Equilateral angle steel national standard specifications and models: 9#, side length 90mm, thickness 8mm, 10mm, 12mm; 10#, side length 100mm, thickness 6mm, 8mm, 10mm, 12mm; 11#, side length 110mm, thickness 8mm, 10mm, 12mm, 14mm; 12.5#, side length 125mm, thickness 8mm, 10mm, 12mm, 14mm; 14#, side length 140mm, thickness 10mm, 12mm, 14mm; 16#, side length 160mm, thickness 12mm, 14mm , 16mm, 18mm; 18#, side length 180mm, thickness 12mm, 14mm, 16mm, 18mm; 20#, side length 200, thickness 14mm, 16mm, 18mm, 20mm. The national standard allows weight deviation of 3%-5%.

　　Things to note when purchasing angle steel:

　　1. Confirm supplier qualifications, product quality system certification, etc.

　　2. Agree on the payment method, weight settlement method, after-sales service, etc.

　　3. Find suppliers with inventory and logistics fleets to save intermediate links, shorten delivery times, and ensure after-sales service.

　　Angle steel acceptance criteria:

　　1. The appearance is free of rust, oil stains, bending, twisting, deformation, etc.

　　2. Check the delivery note, product inspection certificate and warranty letter, and verify whether the product specifications and models are consistent with the requirements.

　　3. Calculate or weigh the acceptance quantity according to the agreed weighing method.