It is said that China's welded pipe market was aggected by price increasing in early July, and transactions activity slightly improved along with the rising prices. Because of the price increasing which would affect by a number of order.

ASTM International is an organization that publishes documents and develops standards on a wide variety of materials and processes.

tainless steel pipe,stainless pipe,stainless steel seamless pipe

The specific features of carbon steel pipe and alloy steel pipe is listed below for you reference:

The seamless steel pipe is strictly manufactured according to the GB/t8162-87, cold rolled (cold drawn) pipe outer diameter of 5 ~ 200mm. The wall is 2.5 ~ 12mm thick. The outer diameter of hot rolled pipe is 32 ~ 630mm. Wall thickness 2.5 ~ 75mm.

GB/T 3091Welded steel pipe for low pressure liquid delivery (2015 standard version) has been approved and released by standardization administration of the People’s Republic of China. The new version put into effect from June 1st, 2016, and meanwhile, the old version of GB/T 3091-2008 became officially invalidated.

The seamless steel pipe is strictly manufactured according to the GB/t8162-87, cold rolled (cold drawn) pipe outer diameter of 5 ~ 200mm. The wall is 2.5 ~ 12mm thick. The outer diameter of hot rolled pipe is 32 ~ 630mm. Wall thickness 2.5 ~ 75mm.

"ERW Pipe" is a high-frequency straight seam resistance welding pipe, English Electric Resistance Welding, the abbreviation referred to as ERW, used to transport oil, natural gas and other vapor-liquid objects meet the high and low voltage requirements, currently the world conveying pipe It occupies a pivotal position in the field.

Are you looking for best and high quality stainless steel pipe for your plumbing project? Then it is the right time for you to learn the basics to make your decision making become easier. Since buying stainless steel pipe might confuse you at first, you need to ensure that you know how to determine the high quality grade of each item before you decide to purchase it.

Many people would prefer stainless steel pipes since they are easy to maintain, they are also resistant to oxidation and they don’t affect the metals which they come into contact with. It is known to be the most useful and sturdiest element in the industry. With that, it has gained good reputation for all the customers all over the world.

1.Above prices based on bare pipes without any coating or packages in 12 MTR based on theoritical weight 2.Cost for material :Q345B、X42-X60 should be marked usd 20-120 /Ton 3.Pakages : Black vanishing : 8 usd/ton end protection : 7.5 usd/ton

welded pipe,welded steel pipe,welded tube

welded steel pipe according to a certain classification method and application thereof can be divided into:precision hydraulic tubes, cold-drawn precision steel, precision cold-rolled steel pipe, high precision steel, precision brighttube. Different materials and models of longitudinal welded pipe in use with a different value and function, in a process ofprocessing and production, make its use in different areas and industries.

ERW steel pipe is manufactured by high frequency electric resistance (ERW) technology. ERW has many advantages, such as high production efficiency, low-cost, saving in material, and easy-to-automation. It is a kind of important welding technology which is widely used in various industrial sectors such as aviation, energy, electricity, automobile, light industry and so on.

SSAW steel pipe is made by hot rolled strip by extrusion forming under the normal temperature. It usually uses the technology of double wire and double-faced submerged-arc. The surface of sipral welded pipe has no scratches since the steel plate has uniform deformation and light residual stress during molding process. And SSAW steel pipe has more flexible thicknesses and diameters.

Piling Pipe is widely used in coastal, river, lake area. Offshore deepwater terminal project in the country have also been large-scale construction in coastal areas, and as a major deep-water dock pile bearing capacity, generally use the large diameter spiral weld pipe, in addition, bridges, roads, high-rise building needs piling pipe etc.

The main purpose of alloy steel pipe is for power plant, nuclear power, high-pressure boiler, high temperature super-heater, re-heater and other high press, high temperature pipeline and equipment. It is manufacture with high-quality carbon steel, alloy structural steel and stainless heat-resistant steel after hot rolling (extrusion, expansion) or cold rolling (pulling).

Hot dip galvanizing process: Workpiece degreasing → washing → pickling → washing → drying solvent dip fluxing preheated hot dip galvanized → cooling → finishing → rinsing → drying → passivation test Electro-galvanized process: Chemical degreasing → washing → hot water hot water electrolysis degreasing → washing → washing → strong corrosive galvanized iron alloy → washing → washing → light → → washing → drying passivation

Galvanized steel pipe is the surface with hot-dip galvanized or electro-galvanized layer. Galvanized steel can increase corrosion resistance and prolong life. Galvanized steel pipe is widely used, except for water, gas, oil, generally low-pressure fluid line pipe, also used oil heater oil industry in particular, marine oil wells pipes, pipelines, chemical coking equipment, condensing coolers, washing coal distillate oil exchange used tubes, as well as the bridge piles, mine tunnel support frame with a pipe.

What is piling? It is a method of establishing the foundation of an edifice. More specifically, it means digging deep into the ground to set up the supporting structure. Other buildings may have their foundations made through shallow digging, but in numerous locations the quality of the soil below a certain depth is too poor to permit such methods; or there may be one or more property lines in the vicinity; or the design loads may simply be so large as to require a deep pit.

①Hot-rolled seamless steel pipe main production process (the main test proess): Tube blank preparation and inspection → tube heating → perforation → rolling pipe → reheating reheating → fixed (minus) diameter → heat treatment → finished pipe straightening → finishing → inspection (lossless, physical and chemical, Taiwan inspection) → storage