984HP1437554932Years ago 373
Application characteristics of I-beam:Metallization: refers to the process of penetrating metal atom...
717HP1274435422Years ago 369
The slab solidified on the surface continues to be rapidly cooled through the secondary cooling sect...
984HP1437554932Years ago 340
X-ray or ultrasonic testing shall be carried out for repair welding of alloy pipe dead end welding o...
256HP1583123772Years ago 364
the oil brush work shall be carried out in accordance with the requirements of the rule systemFor o...
717HP1274435422Years ago 390
Refining and transportation industries are in great demand. Secondly, geological drilling, chemical...
984HP1437554932Years ago 391
The small length of repair welding is mm; The raw material shall not exceed mm after grinding by we...
984HP1437554932Years ago 367
After the passivation treatment of alloy pipe, it is clearly proposed that water cleaning shall be c...
709HP1805184932Years ago 387
Physical and mental health floor is the floor produced according to the production and manufacturing...
256HP1583123772Years ago 340
square tube is generally divided into sectionsThe principle is similar to that of the plate rolling...
717HP1274435422Years ago 365
The operators are mainly plumbers and argon arc welders, with the cooperation of other types of work...