zhaolin
The heat exchanger tube according to the number of regular triangle arrangement how round ..
big yang
Consult: GR.70 16mmSA-516 head fiber elongation is 8% (medium non lethal, thinning is not ..
litian
Dear God, consult a problem. There is no standard on the surface of the flange sealing sur..
阳光boy
Does the HZ form of the new expansion joint have to have a straight edge at the junction o..
专业蓝领30年
China can not be less, the South China Sea is China, I know, yes! But I still have a quest..
wangliang
Ask a question, there is no class a welding seam of the cryogenic vessel also need to do t..
zhaolin
Ask online experts how to calculate the buckling strength of external pressure vessels. Th..
光头强
法兰密封面生锈  能不能用砂轮机打磨啊..
阳光boy
鞍座标准上筋板需要打两个孔配螺栓是干嘛用的?..
TuKai
哪位朋友有AS1657的设计标准,能分享一下吗..