Nkọwa dị mkpirikpi:

Ọkọlọtọ: Ụdị ìsì UNI 6091-67 PN6 UNI6092-67 PN10 UNI 6093-67 PN16 UNI 6094-67 PN25 UNI6095-67 PN40 UNI 6096-67 PN64 UNI 609706ze Ihe DN10-DN2000: CS RST37.2; S235JR; C22.8, SS304/304L/316/316L; Ihe mkpuchi igwe anaghị agba nchara duplex: mmanụ nchara na-egosi; Agba ojii / odo; Galvanized; Mkpuchi Epoxy