... alloy steel, stainless steel, cast steel as per the Standard GB,JB,CB,ZB,JIS,ASTM,SAE,DIN ... metallurgical engineering .(7) Support of bridge applies to bridgework .The product sells to: Domestic, Japan, America, Korea, ... Singapore etc.We own the self –support export authority, 95% of product apply to ... ,ABS,CCS,Germany classification society attestation. mining machine