... waterproof paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps.Test:Chemical Component Analysis, ... inspection:SGS, BV, Lloyds etc.Quality Standard:GB/T3091 Welded steel pipe for low pressure liquid ... and SteamASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and SeamlessDIN ... 08F, 10F, 10, HG5, DF08 SPHC, M8 hot rolled q345 steel pipe