size:DN15-DN100 material:ss316,ss304 face to face:DIN3202 F2 WHOLLY FOREIGN FUNDED Lianfa stainless steel pipes & valves (QingYun) Co.,Ltd. ,We have three lines of precision investment casting,three lines of maching shops,one line of mould forging,also we have two sets of spectral analysis test machines (one is imported from Germany,the other is imported from America),we had advanced sets of ...