... line is 1)pipes:seamless steel pipes, Casing pipe, ERW steel pipe,SSAW steel pipe, Anticorrosion steel pipe2)steel Seamless Butt Welded Pipe Fittings ... (Elbow, Reducing and Equal Tee,Eccentric and ConcentricReducer,Caps,Bend ... to ASTM / DIN / JIS / BS / GB and so on cn209679824 steel pipe caps GOST17379