Galvanized steel pipe is a steel pipe with a hot-dip galvanized or electro-galvanized layer on the surface. Galvanizing can increase the corrosion resistance of steel pipes and prolong the service life. Galvanized pipes are widely used. In addition to being used as pipeline pipes for general low-pressure fluids such as water, gas, and oil, they are also used as oil well pipes and oil pipes in the petroleum industry, especially in offshore oil fields, and oil heaters and condensers in chemical coking equipment. Pipes for coolers, coal distillate washing oil exchangers, and trestle piles, support pipes for mine tunnels, bridge construction, railway vehicles, highways, sports facilities, industrial machinery, etc.
Galvanized steel pipe and seamless steel pipe are two fields of steel pipe. Galvanized refers to the galvanized surface of the steel pipe, which may be a welded pipe or a seamless pipe. Galvanized pipes are more resistant to corrosion, and seamless steel pipes can withstand higher pressures.
Galvanized steel pipe is not easy to rust due to the protection of zinc. Galvanized steel pipe is lighter than seamless steel pipe. If it is used for balcony, it is recommended to use galvanized light pipe. The wall thickness of the seamless steel pipe is heavy, and the natural weight is heavy, and the cost of the seamless steel pipe is higher than that of the galvanized steel pipe, and the galvanized steel pipe is very durable, and the service life is much longer than that of the seamless steel pipe. If the quality is excellent, it should not be a problem to use it for more than 20 years. Of course, welding and painting should also be done well, so as not to affect the service life of the galvanized steel pipe.
Different uses:
Galvanized steel pipes are generally used to make fences, fences, guardrails, and balcony guardrails. Widely used in municipal engineering, roads, factories, campuses, development zones, garden squares, communities and other places.
Seamless steel pipes are very important in industry and can be used as fluid transport pipes. Seamless steel pipes are mainly used to produce mechanical parts with moderate bearing capacity and speed, parts with high load, moderate impact and speed, and are widely used in petroleum, aviation, automobile and other industries.
Usage | Applicable to the general structure, mechanical structure, water wall panel, economizer, super heater, boiler and heat exchanger with seamless steel tubes, and to transport liquid, gas, oil etc. |
Standard | API 5L, API 5CT, ASTM A106/A53, ASTM A519, JIS G 3441, JIS G3444, JIS G3445 DIN 2391, EN10305, EN10210, ASME SA106, SA192, SA210,SA213, SA335, DIN17175, ASTM A179… |
Certificate | API 5L PSL1/ PSL2, API 5CT,ISO 9001-2008 |
Out Diameter | 10.3-914.4mm |
Wall Thickness | 1.73-40mm |
Length | Random Length, Fixed Length, SRL, DRL |
Steel Grade | API 5L: GR B, X42, X46, X56, X60, X65, X70 |
ASTM A53/A106 | GR A, GR B, GR C |
ASME SA106 | GR.A, GR.B, GR.C |
ASME SA192 | SA192 |
ASME SA209M | T1, T1a |
ASME SA210 | GR.A-1, GR.C |
ASME SA213 | T2, T5, T9, T11, T12, T22 |
ASME SA335 | P2, P5, P9, P11, P12, P22, P91 ASTM A333:Gr.1, Gr.3, Gr.4, Gr.6, Gr.7, Gr.8, Gr.9, Gr.10, Gr.11 |
ASTM A333 | Gr.1, Gr.3, Gr.4, Gr.6, Gr.7, Gr.8, Gr.9, Gr.10, Gr.11 |
DIN17175 | ST35.8, ST45.8, 15Mo3, 13CrMo44 |
Heat treatment | Annealed: Bright annealed,Spheroidize annealed, Normalized, Stress relieved, Cold finished, Quenched and Tempered |
Delivery Condition | BKS, NBK, BK, BKW, GBK(+A), NBK(+N), BK(+C) |
Mill Test Certificate | EN 10204/3.1B |
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