steel pipe

               A335 P5 alloy steel pipe is an alloy steel pipe, which is mainly used in the fields of heating surface pipes of low and medium pressure boilers. ①The two digits at the beginning of the steel number indicate the carbon content of the steel, expressed in ten thousandths of the average carbon content, such as 40Cr .2 The main alloying elements in steel, except for individual microalloying elements, are generally expressed in percent. When the average alloy content is less than 1.5%, only the element symbol is generally indicated in the steel number, but the content is not indicated. However, in special cases, if it is easy to cause confusion, the number "1" can also be marked after the element symbol, such as the steel number. "12CrMoV" and "12Cr1MoV", the former has a chromium content of 0.4-0.6%, the latter is 0.9-1.2%, and the rest of the components are all the same. When the average content of alloying elements is ≥1.5%, ≥2.5%, ≥3.5%..., the content should be indicated after the element symbol, which can be expressed as 2, 3, 4...etc. ③Alloying elements such as vanadium V, titanium Ti, aluminum AL, boron B, and rare earth RE in the steel are all microalloying elements, and although the content is very low, they should still be marked in the steel grade. ④High-quality high-quality steel should add "A" at the end of the steel number to distinguish it from general high-quality steel. ⑤ For special purpose alloy structural steel, the steel number is crowned (or suffixed) with a symbol representing the purpose of the steel. Alloy pipes and seamless pipes have both relationships and differences, and should not be confused. Alloy pipe is defined by the steel pipe according to the production materials (that is, the material). As the name suggests, it is a pipe made of alloy. The manufacturing process1. Hot rolling (extruded seamless steel pipe): round tube billet → heating → perforation → three-roll skew rolling, continuous rolling or extrusion → pipe removal → sizing (or diameter reduction) → cooling → straightening → hydraulic test (or flaw detection) → marking → storage 2. Cold drawn (rolled) seamless steel pipe: round tube billet → heating → perforation → heading → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) )→blank tube→heat treatment→straightening→hydrostatic test (flaw detection)→marking→warehousing.  

Sanitary mirror tube process:
Tube blank→inspection→peeling→inspection→heating→piercing→pickling→grinding→lubrication and air drying→welding head→cold drawing→solution treatment→pickling→pickling passivation→inspection→cold rolling→oil removal→cutting head → air drying → inner polishing → outer polishing → inspection → identification → finished product packaging
Industrial tube process
Tube blank→inspection→peeling→inspection→heating→piercing→pickling→grinding→lubrication and air drying→welding head→cold drawing→solution treatment→pickling→pickling passivation→inspection

Alloy Steel pipes have hollow sections and are widely used as pipelines for transporting fluids, such as pipelines for transporting oil, natural gas, gas, water and certain solid materials. Compared with solid steel such as round steel, alloy steel tube is lighter in weight when the bending and torsional strength is the same. Alloy steel pipe is an economical section steel, which is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, automobile transmission Axles, bicycle racks and steel scaffolding used in building construction, etc.

Q: Are you a manufacturer?
A: Yes , we are a seamless steel pipe  manufacturer, We have own factory, which is located in Shandong,China. We have a leading power in producing and exporting hot rolled seamless steel pipe,cold rolled seamless steel pipe,cold drawn seamless steel pipe and alloy seamless steel pipe etc. We promise that we are what you are looking for. 
Q:Can we visit your factory ?
A:Warmly welcome once we have your schedule we will pick you up .
Q: Do you have quality control?
A: Yes, we can accept BV, SGS third inspection .
Q: Can you arrange the shipment?
A: Sure, we have permanent freight forwarder who can gain the best price from most ship company and offer professional service.
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 25-35 days if the goods are not in stock, it is according to quantity.
Q:How can we get the offer?
A:Please offer the specification of the product,such as material,size,shape,etc.So we can give the best offer.
Q:Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.
Q: How do you make our business long-term and good relationship ?
A: 1.We keep good quality and competitive price to ensure our customers' benefit.
2.We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.