Seamless Tubing, Couplings Hydrosulfide-Carbon Dioxide, Cold-Resistant tube
The general corrosion rate for metal of tubing, couplings and strengthened connection parts is not more than 0.5 mm/year.
The tubing is made in two versions:
1. Plain tubes with couplings per GOST 633-80;
2. Tubes completed with strengthened connection parts.
The tubes are manufactured with strength groups Ks, Es, Ls with range as per GOST 633-80.
The range of tubing with couplings is specified by Table 1.1.
DN (nominal diam.) of pipe, mm | Tube wall thickness, mm | Tube type |
Plain, without thread | Plain, with triangular thread |
60 | 5,0 | Ks, Es, Ls | Ks, Es, Ls |
73 | 5.5 : 7.0 | Ks, Es, Ls | Ks, Es, Ls |
The range of tubing with strengthened connection parts is specified by Table 1.2.
Tube type | DN (nominal diam.), mm | Tube wall thickness, mm | Outside Diameter of coupling and sub, mm |
Plain as per GOST 633-80 | 60 73 89 | 5.0 5.5 : 7.0 6.5 : 8.0 6,5 7.0 | 73.0 88.9 108.0 120.6 132.1 |
The tubes are manufactured in version A per GOST 633-80.
In coordination with client the tubes can be manufactured with the length up to 11 meters.
The tubes and couplings are manufactured from tube shell made from steel 30 FB, 30 KhF and 30 KhMFBA.