16Mn large dia
16Mn large dia
Q345B thick waIn the production process, the hot-rolled steel pipe has the characteristics of no raw materials, that is, the mechanical properties of thick wall steel plate. In this way, the steel plate is heated first and then rolled, which softens the steel plate under great conditions, which will not affect the material quality, nor damage the properties such as strength, yield and tensile strength. For the wall thickness that can not be achieved by cold rolled steel pipe, the specification and model of thick wall steel pipe are added.
The distance between the longitudinal joints of two pipes shall be greater than 100 mm. The distance between the outer wall of the branch pipe and the weld shall not be less than 50mm.
.The groove sizes of longitudinal seam and circumferential seam of hot-rolled thick wall coiled pipe are different. Therefore, before plate rolling, it is necessary to confirm whether the inner side is upward to ensure the correctness of groove direction.
Today's equipment is double-sided submerged arc welding, because it goes without saying that double-sided welding is necessary here.
.The steel plate coil adopts the secondary forming process. When rolling, first bend both ends of the steel plate, and the diameter shall be less than the diameter of the coiled pipe. Then adjust the bed pressure, rolling two to three times steel pipe coiled pipe welding and strengthening the rolling pipe joint long-term rolling pipe, Q235B coil pipe, Q345B coil pipe, large diameter thin wall tube, large diameter heavy wall coil pipe, stainless steel coil pipe, L360 coil pipe, 16MN coil pipe and other brand products, designated products are complete, quality assurance. Then transported to the welding platform for welding.
High manganese content 6 will make the steel brittle and reduce its plasticity. Under what circumstances does the thick wall coil need to be preheated before welding?
When the nominal diameter is greater than or equal to 600mm, back welding shall be carried out in the pipe.
The distance between the longitudinal joints of two pipes shall be greater than 100 mm. The distance between the outer wall of the branch pipe and the weld shall not be less than 50mm.
The camera measures the length.
The latter stage is called unloading regression. At this time, the sector continues to retract from the circumferential position of the rewind pipe before rewinding,16Mn welded pipe, and will eventually reach the initial expanding position, which is the small shrinking diameter of the sector required by the expanding process. In practical application, in the process simplification, the three steps can be combined and simplified, which has no impact on the expanding quality of steel pipe. How to calculate the weight per meter of steel coil? Steel coil belongs to steel pipe, so it is combined with general formula when carrying out theoretical weight.
Standard requirements., low cost. The rolling pipe is mainly used for pipes, billboards, columns, and after shot peening, the scales on the inner and outer surfaces of the elbow are removed, and both ends are processed with grooves to facilitate welding.
The offer is in progress. Welcome new and old customers to consult. Prevent surface damage of steel plate. Thick wall coil and large diameter coil are mainly made of carbon steel Q19 q23 q34 16Mn, two or more steel pipes must be connected. Therefore etc. coil is a kind of welded pipe product with simple and flexible process. If the length required by the customer is special, the process of this welded pipe is flexible, convenient and applicable. The disadvantage is that it can not be produced by mechanized line. The level of automation and mechanization is not high,20# large diameter welded pipe, which requires a lot of manual processing. The main problem of coiled pipes is welding. Thick wall coiled pipes can be delivered as long as they can be inspected by flaw detection. The relevant requirements are broader than other products.
Chinese Name: welded pipe English Name: welded tube, welded pipe definition: the pipe formed by crimping the plate and strip into a pipe barrel with specified shape and size, and welding the joint with appropriate welding. Applied discipline: Material Science and Technology (level discipline); Fundamentals of materials science and Technology (level discipline); Material synthesis, preparation and processing (level discipline); Plastic processing technology (level discipline) what are the main raw materials of electric welded steel pipe?
Where can I find it?.Service specification of coiled steel pipe: there are spiral welded pipe and seamless pipe, and the pressure resistance of gas and water is different.
During handling, the damaged parts shall be protected. Raw materials include steel strip coil, thick wall large diameter steel plate coil, the production site environment is complex, and the measurement cannot pass through the lower support bench of the steel pipe. This operation is convenient and the measurement accuracy is within & plusmn; Within 10mm, repetition accuracy ≤ 5mm. Thick wall coiled pipe is made of steel plate. Thick wall coiled pipe can be divided into coiled pipe and hot-rolled thick wall coiled pipe.
.Thick wall coiled pipe is usually higher than dn450. Thick wall coiled pipe is sometimes two welds. Why does this happen mainly because of raw material problems and equipment processing problems? The steel plate with the required width of welded pipe required by the customer is usually not produced by the steel plant, the requirements related to delivery are wider than other products. The detection of thick wall coiled pipe is mainly ultrasonic flaw detector. The longitudinal weld on the same cylindrical part of the coiled pipe shall not be greater than 2. When the coil pipe is butt welded, the corresponding parts shall be flushed to. When the nominal diameter is larger than the inner seal, the bottom seal welding shall be carried out. The surface of the circuit board shall be protected from damage during tube rolling treatment.
The pipe volume is huge, the production site environment is complex, and the measurement cannot pass through the lower support bench of the steel pipe. This operation is convenient and the measurement accuracy is within & plusmn; Within 10mm, repetition accuracy ≤ 5mm. Thick wall coiled pipe is made of steel plate. Thick wall coiled pipe can be divided into coiled pipe and hot-rolled thick wall coiled pipe.
In progress, welcome to consult. Large diameter welded pipe etc.