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jacky zhu 2020-06-23

Dear God, directly welded steel plate, can take X tablets? False piece does not have the o..

zhaolin 2020-06-12

The tubular heat exchanger baffle plate and the heat exchange tubes need welding? Expert g..

small qin 2020-06-09

Help cooling water heat exchanger fouling can be cleaned Online..

big yang 2020-05-14

Consult: GR.70 16mmSA-516 head fiber elongation is 8% (medium non lethal, thinning is not ..

The welding problem of container, turn to God 3 0

wangliang 2020-04-30

Ask a question, there is no class a welding seam of the cryogenic vessel also need to do t..

专业蓝领30年 2020-03-30

请教下哪个规范规定不能用J422焊条焊接碳钢压力管道的..

阳光boy 2019-12-19

3个厚的罐壁焊接管是不是不用开坡口了？..

TuKai 2019-12-09

We use welded type for container connection. Is it necessary to take photos on site..

小鱼曾乖乖 2019-11-28

When the thickness difference between the cylinder and the modified long neck flange is la..

阳光boy 2019-11-26

Can carbon dioxide shielded welding be used for head panel..