Tolerance: Meet the standard.
Standard: ASTM A312, ASTM A213, GB/T14975-2002, GB/T14976-2002, GB/T13296-91
Application: Applications range: For use in the petroleum, smelting, foodstuff, power, papermaking, chemical, medical equipment, aviation, boiler heat-exchanger and other fields.
Packing: Plastic wrapper, wooden case (export standard)