PURPOSE:To improve the crushing strength of steel pipe, by cooling rapidly the steel pipe having been tempered so as to produce tensile residual stress on the internal surface. CONSTITUTION:After a steel pipe 4 is tempered at 600 deg.C, it is conveyed by pinch rolls 3 in the direction of...
Design loads are multiplied by the safety factor and divided by the crushing strength to give the minimum bedding factor. Trench widths increase in 100mm intervals. Table 21 gives the fill loads per metre on pipes of 100mm to 600mm diameter in wide trench conditions. Similar loadings are ...
Table 4-4. Basic IADC Roller Tri-Cone Drill Bit Selection Criteria Roller Cone Bit Selection Criteria Formation CategoriesCompressive Strength (PSI)Compatible TCR Bits [IADC] Very soft < 4000 1-1 series Soft & sticky 4000–6000 1-2 & 4-3 series Soft 6000–9000 1-3 & 5...
Unplasticized polyvinyl chloride (PVC) fittings with plain sockets for pipes under pressure; Laying lengths; Metric series ISO 265-1:1988 Pipes and fittings of plastics materials; fittings for domestic and industrial waste pipes; basic dimensions: metric series; part 1: unplasticized poly(vinyl chlo...
The table of the equipment is made of thickened stainless steel mold, which ensures that the bending machine will not be worn or scratched in the production process. Mold pressure bar is equipped with pneumatic device, accurate positioning and high working efficiency. The equipment is desig...
thus the surface of the tubes expanding can achieve heating equality. The tail rack is made from landing next to the electric bodies. Furnace control system consists of intelligent temperature control table control, pneu...
PE Carbon bellows pipe with its special threaded shape, light weight and high strength, high temperature resistance, corrosion resistance, random length and free bending Laying traction steel wire in the pipe can make the construction fast, its non crushing performance ...
–Carbon steel cover plates, welding plates, nuts are galvanized, with high strength bolts; –Stainless steel cover plates, welding plates, nuts, bolts are avaiable in stainless steel grade 304, 316. Other requirments are available upon request. ...
The table of the equipment is made of thickened stainless steel mold, which ensures that the bending machine will not be worn or scratched in the production process. Mold pressure bar is equipped with pneumatic device, accurate positioning and high working effi...
167 Size Range: 1⁄₂" through 24" pipe with 1⁄₂", 3⁄₄", 1", 11⁄₂" and 2" thick insulation Material: Carbon steel Finish: Galvanized Service: Recommended for outside of foam or fiber glass insulation for distribution of loads to preclude crushing of insulation without...