1、焊缝缺陷：焊缝缺陷较严重，采用手工机械打磨处理方法来弥补，产生的打

1. Welding seam defects: Welding seam defects are more serious, which are compensated by manual mechanical grinding treatment methods. The resulting grinding marks cause uneven surface and affect the appearance. <br>2. Inconsistent surface: only pickling and passivation of the weld seam will also cause uneven surface and affect the appearance. <br>3. Scratches are difficult to remove: the overall pickling and passivation can not remove all kinds of scratches generated during processing, and can not remove carbon steel, splashes and other impurities that adhere to the surface of stainless steel due to scratches and welding splash , Causing chemical or electrochemical corrosion and rust in the presence of corrosive media. Seamless steel pipe price, Tianjin seamless steel pipe, oil casing, 12cr1mov, seamless steel pipe price, precision seamless steel pipe, 16mn seamless steel pipe, 15CrMo alloy pipe, q345b seamless pipe, q345B seamless steel pipe, Tianjin 27SiMn steel pipe, pipeline Pipe, 35crmo steel pipe, 12cr1mov alloy pipe, high pressure alloy pipe, Chongqing seamless steel pipe, bearing steel pipe, alloy pipe, Shandong steel pipe, precision seamless steel pipe, Tianjin seamless pipe, 15crmo steel pipe, Tianjin square pipe price, oil casing, high pressure Alloy tube. <br>4. Uneven grinding and polishing passivation: After manual grinding and polishing, pickling and passivation treatment is performed. It is difficult to achieve a uniform and uniform treatment effect for large-area workpieces, and an ideal uniform surface cannot be obtained. And the cost of working hours and the cost of auxiliary materials are also higher. <br>5. The pickling ability is limited: the pickling passivation paste is not omnipotent. It is difficult to remove due to plasma cutting and flame cutting and black oxide scale. <br>6. The scratches caused by the factors are more serious: During the lifting, transportation and structural processing, the scratches caused by human factors such as bumps, dragging, and hammering are more serious, which makes the surface treatment more difficult, and it also causes corrosion after treatment. The main reason. <br>7. Equipment factor: During the bending and bending of profiles and plates, the scratches and creases caused are also the main causes of corrosion after treatment. <br>8. Other factors: During the procurement and storage of stainless steel raw materials, bumps and scratches due to lifting and transportation are also serious, which is also one of the causes of rust.

1, weld defects: weld defects are more serious, the use of manual mechanical grinding treatment methods to make up for, resulting in grinding traces, resulting in uneven surface, affecting aesthetics.<br> 2, the surface is inconsistent: only the weld for acid washing passivation, but also caused uneven surface, affecting aesthetics.<br> 3, scratch difficult to remove: the overall acid washing passivation, can not be processed to produce a variety of scratches removed, and can not remove due to scratches, welding splashes and adheretod to the stainless steel surface of carbon steel, splashes and other impurities, resulting in chemical or electrochemical corrosion in the conditions of corrosive media and rust. Seamless steel pipe price, Tianjin seamless steel pipe, oil casing, 12cr1mov, seamless steel pipe price, precision seamless steel pipe, 16mn seamless steel pipe, 15CrMo alloy tube, q345b seamless pipe, q345B seamless steel pipe, Tianjin 27SiMn steel pipe, pipeline pipe, 35crmo steel pipe, 12cr1mov alloy pipe, high-pressure alloy pipe, Chongqing seamless steel pipe, bearing steel pipe, alloy pipe, Shandong steel pipe, precision seamless steel pipe, Tianjin seamless pipe, 15crmo steel pipe, Tianjin square pipe price, oil casing, high-pressure alloy pipe.<br> 4, polishing passivation uneven: manual polishing after the acid washing passivation treatment, the largearea of workpieces, it is difficult to achieve uniform and consistent treatment effect, can not achieve the ideal uniform surface. And the cost of work, the cost of accessories is also higher.<br> 5, the ability to clean up the acid: acid washing passivation paste is not omnivantable, plasma cutting, flame cutting and production and black oxide skin, more difficult to remove.<br> 6, for the factors caused by the scratch is more serious: in the lifting, transportation and structural processing process, bumping, dragging, hammering and other human factors caused by the scratch is more serious, making the surface treatment more difficult, but also the main cause of corrosion after treatment.<br> 7, equipment factors: in the profile, plate coil bending, bending process, resulting in scratches and creases are also the main cause of rust after treatment.<br> 8, other factors: stainless steel raw materials in the procurement, storage process, due to lifting, transportation process caused by bumps and scratches are also more serious, but also one of the causes of rust.

1. Weld defect: the weld defect is relatively serious. Manual and mechanical grinding is used to make up for it. The grinding trace will cause uneven surface and affect the appearance.<br>2. Surface inconsistency: only pickling and passivation are carried out for the weld, which also causes uneven surface and affects the appearance.<br>3. Scratches are hard to remove: overall pickling and passivation can not remove all kinds of scratches produced in the processing process, and also can not remove carbon steel, splashes and other impurities adhering to the stainless steel surface due to scratches, welding splashes, resulting in chemical corrosion or electrochemical corrosion and rust in the presence of corrosive medium. Seamless steel pipe price, Tianjin seamless steel pipe, petroleum casing, 12Cr1MoV, seamless steel pipe price, precision seamless steel pipe, 16Mn seamless steel pipe, 15CrMo alloy pipe, Q345B seamless steel pipe, Q345B seamless steel pipe, Tianjin 27SiMn Steel pipe, pipeline pipe , 35CrMo steel pipe, 12Cr1MoV alloy pipe, high pressure alloy pipe, Chongqing seamless steel pipe, bearing steel pipe, alloy pipe, Shandong steel pipe, precision seamless steel pipe, Tianjin seamless steel pipe, 15CrMo steel pipe, Tianjin square pipe price, oil casing, high pressure alloy pipe.<br>4. Uneven grinding, polishing and passivation: pickling and passivation treatment is carried out after manual grinding and polishing. For workpieces with large area, it is difficult to achieve uniform treatment effect and can not get ideal uniform surface. And the cost of working hours and auxiliary materials is also high.<br>5. Pickling capacity is limited: pickling passivation paste is not universal. It is difficult to remove the black oxide scale produced by plasma cutting and flame cutting.<br>6. Scratches caused by factors are serious: in the process of hoisting, transportation and structural processing, scratches caused by bumping, dragging, hammering and other factors are serious, which makes the surface treatment more difficult, and is also the main cause of corrosion after treatment.<br>7. Equipment factor: in the process of profile and plate bending, scratches and creases are also the main causes of corrosion after treatment.<br>8. Other factors: during the purchase and storage of stainless steel raw materials, the bumps and scratches caused by hoisting and transportation are also serious, which is also one of the causes of corrosion.