... cracking and no steel-plastic separationNo cracking and no steel-plastic separationFlattening Test(NB ... StandardConformed to GB/T17219 StandardChill and heat resistant circulationNo distortion and crack happens to plastic ... beam removing, pipe end PVC capping, threading and so on. Standard: GB, BS, AISI, ASTM, API, ... To improve the self-image, get well-connected with the world and win more business, ...