Circle inch 150mm steel 40(4)X13 inexpensive, cutting, machining, shipping to Ukraine.
Circles, shestigrannik, t/C, flanges, bends
Steel pipes GOST 10704 8732 isolated inner surface and the outer surface is very reinforced type-shrink tape,film, extruded p/e
Steel pipes GOST 8732,10704, 10705 isolated
an inner surface of Organosilicon composition KOK (the conclusion of the Ministry of health of Ukraine for use in contact with drinking water) - amplified type";
polymer tape LGPL, shrink film Terminal (DTL-91),ekstrudirovannym polyethylene is highly reinforced type
Steel pipes inch Hm. GOST 8732, 8734, isolated
an inner surface Kremniikarbidnoi composition KOK - reinforced type,
insulated outer surface is highly reinforced type - shrink tape, polymer p/e film, extruded polyethylene
According to:
DBN Century 2.5-20-2001 "SUPPLY" DSTU 4219-2003 "steel pipe mains. General requirements for corrosion protection";
DSTU B C. 2.5-30:2006 "steel underground Piping systems for hot and cold water";
DSTU B C. 2.5-29:2006 gas supply System. Underground steel pipelines."