... 304,304L,316,316L,317,317L 3) Standard: ASTM/AISI/DIN/JIS 4) Size: DN1tee (equal ... ,321,304,304L,316,316L,317,317L3) Standard: ASTM/AISI/DIN/JIS4) Size: DN10 - DN1,200mm ... tapping machine and chasing lathe,complete set of equipments processing ball,assembling valve and testing ... spectrocmparator imported from Swiss to guarantee the chemical composition of the material of its products We hope to cooperate ...