965HP11392486515An hour ago46
In limestone area, the punching is not good, and it is difficult to sink the reinforcement cage. Whe...
717HP1274435421Days ago42
No solution treatment. The alloy elements do not dissolve into the matrix, resulting in low alloy co...
256HP1583123771Days ago51
Functional index analysis of qb square tube - the load on the machine parts due to the great progres...
717HP1274435421Days ago48
Solution treatment. The main purpose of water quenching after heating the steel to ~ ℃ is to disso...
35HP1626574701Days ago34
The Chinese brand cold rolled non oriented silicon steel strip (sheet) indicates: DW + iron loss val...
535HP1368588251Days ago44
Copper pipe has the characteristics of and is the choice for the installation of water pipe, the mar...
709HP1805184932Days ago36
Men&#;s long-term inhalation will cause men&#;s abnormal sperm and death.First, the scope of...
965HP1139248652Days ago50
The mesh structure of the grouting pipe can make the pore water pressure dissipate faster, and effec...
984HP1437554932Days ago33
Whether I-section steel is ordinary or light,TravnikInconel 718 Alloy Pipe, because the section size...
35HP1626574702Days ago41
It's the grindstone. High end products are not allowed.In the building water supply pipe system...
