시공전에 각종관( 강관 ,동관, 연관등 )의 결함 유무를 확인하

시공전에 각종관( 강관 ,동관, 연관등 )의 결함 유무를 확인하고, 불량 파이프는교체 시공한다.

ผลลัพธ์ (อังกฤษ) 1:

Before construction, various kinds of pipes (steel pipe, copper tube, associate, etc.) to determine the presence of a defect, the defective pipe is to be replaced by construction.

ผลลัพธ์ (อังกฤษ) 2:

Before installation check for defects of various pipe (pipe, tube, associations, etc.) and replace defective pipe construction.

ผลลัพธ์ (อังกฤษ) 3:

Before the construction of various House (steel pipe, copper pipe, such as associated with the defect existence, determine best bad pipe replacement.