00:20
Kiểm Tra Thường Xuyên Các Đường Ống Thép 1- Kích Thước
Mô tả video
Discover the GB/T 34109 Thick-Walled Seamless Alloy Steel Pipe, designed for drill rods in rotary digging machines. This video covers routine inspections focusing on dimensions, ensuring quality and durability for demanding drilling applications.
02:50
00:56
01:19
01:54
