Pipe Culvert, waa nooc ka mid ah injineernimada sida caadiga ah loo isticmaalo qaabka mawjadda-sida qalabka tuubooyinka, steel carbon, ahama, galvanized, aluminium, iwm sida ka kooban alaabta ceeriin ugu weyn. Waxaa loo isticmaali karaa petrochemical, instrumentation, aerospace, chemic...
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