steel pipe

    Round steel pipe are steels that are open at both ends and have a hollow concentric section with a length that is relatively large compared to the circumference. It can be used in pipelines, thermal equipment, machinery industry, petroleum geological drilling, containers, chemical industry and special applications.     Classification of round steel pipe     According to production methods can be divided into seamless round steel pipe and welded round steel pipe.     Seamless round steel pipe manufacturing process     Tube Blanks - Inspection - Peeling - Inspection - Heating - Perforation - Pickling - Grinding - Lubrication Air Drying - Welding Head - Cold Drawing - Solution Treatment - Pickling - Pickling Passivation - Inspection     Welding round steel pipe manufacturing process     Strip - Inspection - Shear - Length - Qualitative - Welding - Smoothing - Length - Inspection

    The newly-produced large-diameter thick-walled seamless steel pipe ports will be rough, such as burrs, burrs and debris. The overall sensory effect of large-caliber thick-walled seamless steel pipes will have a big impact, so this will require us to handle them.     The ports of large-caliber thick-walled seamless steel tubes may have such a residue. We must handle them properly at this time. Large-diameter thick-walled seamless steel pipe spacing should use fine-tooth saws, cutting knives or special cutting machine. When breaking the pipe, the nozzle should be flat and perpendicular to the axis of the pipe.     At the end of the socket, the medium plate is used to chamfer the nozzle. The chamfer angle is 10°-30°. Before the large-caliber thick-walled seamless steel pipe is connected, the sand and dirt on the inner side of the socket and the outer side of the socket are connected. Water stains are scrubbed and clean. If there is oil stain, use a cl...

    As long as it is for seamless steel pipe has a certain understanding of friends, you know that it has a lot of hollow section, to a large number of into the fluid in the pipeline, such as oil and gas pipelines, etc. Solid material such as steel pipe, if the bending strength is equal, its quality is small, easy to transport and install, is a kind of economic cross section steel, at the same time can also be widely into the mechanical parts, such as oil drill pipe and bike rack, etc., its effective to improve the material utilization, but also can simplify the manufacturing process.     And now the domestic market of seamless steel pipe manufacturing technology good and bad are intermingled, want to buy high quality seamless steel tubes for amateurs also exists a certain difficulty, so how to buy seamless steel tube?     Seamless steel tube standard now has a total of 47 items, the GB/T17395 seamless steel tube, regardless of size or has a certain de...

    Casing in the production prone to outer folding defects, affect product quality improvement, it needs to be controlled.     There are several outer folding edge oxide particles cause segregation of elements, with a folding, an oxide middle folding, the presence of an excess of Al, Mg, Ca, S, P, Mn, Si outer folding element, particularly at the grain boundaries have 20μm so brittle inclusions SiO2 and silicates, intergranular fracture occurs, and said brittle inclusions is the main reason for the formation of the outer fold.     Smelting process:     1) To ensure that a pull carbon hit, after avoiding blowing carbon control endpoint> 0.10%;     2) Increase the effect of converter slag, slag under strict control, the departure process using slag, a steel ladle slag after thickness <50mm;< span="">     3) Double slag operation, control phosphorus content of the molten steel.     Refining proc...

    According to the production process, we know that there are lots of processes for the manufacture of ERW steel pipe. And here are some main welding process parameters during ERW steel pipe’s making.     1. Input power: input power control is an art for steel pipe’s production. If there is no enough input power, the edge of the strip cannot be completely melted.     2. Production speed: like the input power, we should make the right speed for ERW steel pipe’s making too. If the speed is too fast, the input heat is insufficient, and the solid oxide at the end can not be extruded to form a low-temperature welding defect     3. Opening angle: different angle would lead to different shape for steel pipe. So that we should take control for the opening angle during production.     4. Welding pressure: If the welding pressure is not enough, the weld lines on the two sides of the streamline of the metal structure are not obvious, and ...

Differed from welded steel pipe, seamless steel pipe needs more attention. Thanks to a large number of properties of seamless steel pipe, it is widely in different kinds of industries, such as construction, machining, electricity and wind power plant. With the improvement in the technology, the number of production of seamless steel pipe is crazily increasing meanwhile the requirement of seamless steel pipe is also rapidly increasing due to the fast construction of society. Facing the complicated market of seamless steel pipe, purchasers are always confused and struggle to choose. However, the following warm tips will lead to buyers having a clear picture of how to buy seamless steel pipe. The key tip of how to buy seamless steel pipe which is different from welded steel pipe is firstly to have a clear and entire picture of buyers' own requirement. Different seamless steel pipes usingin the various situation have different compositions, which seems welded steelpipe, s...

    Black steel pipe used for conveying fluidand solid, not only to exchange heat, manufacturing machinery parts and container, it is also a kind of economic steel. With black steel pipemanufacturing space truss structures, pillar and mechanical support, can reducelight weight, saving metal 20 ~ 40%, and can realize the mechanization offactory construction. Black steel pipe manufacturing highway Bridges not onlycan save steel, simplify construction, and can greatly reduce the area of thecoating layer, save investment and maintenance costs.     So, any other types of steel cannotcompletely replace steel tube, but the steel tube can replace part of theprofile and bar. Black steel pipe to the national economic development andimprovement of quality of human life, is far better than the other steelproducts. From People's Daily appliances, furniture, water supply and drainage,gas supply, ventilation and heating facilities to various kinds of agriculturalmachinery equipm...

    Depending on the process requirements of the manufacturer, ASTM A213 P11 alloy steel pipe has several ways of measuring length. Today I will introduce four main methods of measuring the length of a steel pipe.     1.Grating Length Measurement     The basic principle is that two fixed-length grating scales are respectively arranged on the two outer ends of the steel pipe, and the grating rod is driven by the rodless cylinder to be close to the two ends of the steel pipe to measure the length of the A213 P11 alloy steel pipe by using light interference phenomenon.     Characterized by high accuracy. However, grating scales are expensive and difficult to maintain, and are sensitive to the effects of dust and site vibrations.     2. The Camera Measured Length.     Camera length measurement is the use of image processing to achieve A213 P11 alloy steel pipe length measurement, the principle is in a section of steel pip...

    As steel pipe supplier, Tianjin Xinyue Steel Group would supply you with the steel pipe from seamless steel pipe, ERW steel pipe to SSAW steel pipe according to your customized requirement.     Of course, we have to confess that there are production failure for steel pipe too which would give us cautions and let us do the best steel pipe for our clients.     The general problems are:     1. Squeegee scratch: this problem would happen during the cross-sections for the steel pipes during the both sides from horizontal and vertical axes. Under this situation, it would conclude flat roll and vertical roll holes. Thus, we should pay high attention to it and solve this trouble for goal of high quality steel pipes.     2. Dot during the drill pipe: this can be another trouble for steel pipe’s making. It generally occurs in the thin steel pipe produced episodes. As the primary rigid thin-walled pipe is poor, and because the wall is t...

    No matter which kind of test we’ve used in steel pipe’s quality checking,Xinyue Steel pipe is just want to keep the high quality of seamless steel pipe, ERW steel pipe and galvanized steel pipe and so on. Thus, we can have a review for the role of non-destructive testing in steel pipe production.     There is no doubt that Non-destructive testing is an indispensable tool for industrial development. They have important role for checking the good or bad for steel pipes. Generally speaking, it influences the level of industrial development in a country. And the Non-destructive testings’ categories would be include:     1. Radiological testing (RT)     2. Ultrasonic testing (UT)     3. Magnetic particle testing (MT)     4. Liquid penetration testing (PT)     Of course, there are other non-destructive tests such as ECT, AE, LT, LT, ACFMT, MFL, and far-field testing Detection (RFT), ultrasonic TOFD method (T...