What issues should be noted when purchasing elbows? Here are some suggestions for you to help you purchase high-quality elbow products!
We need to determine the specifications and models of the elbow to be purchased, that is, the standard of the elbow, the diameter of the elbow, as well as the rated pressure or wall thickness. If the pressure level and wall thickness are known, the pressure can be converted. Next comes the material of the elbow, and then the corrosion issue. Whether the elbow needs to be painted or sandblasted is acceptable or not.
1.Attention should be paid to the material of the elbow
Some unscrupulous pipe fitting manufacturers use irregular materials. The common criterion for judgment is the nickel content. Although it can be distinguished by using chemicals, it is obviously a misunderstanding. Because the small charge contains nickel only7There are so many that it is impossible to distinguish them, but the prices of raw materials vary greatly. This is one of the forms of counterfeiting, especially321High nickel and316High-nickel counterfeiting is very serious. Therefore, when purchasing elbows, it is necessary to pay attention to the material of the elbows. To ensure the quality of the elbows, it is recommended that everyone purchase from regular manufacturers.
2.Attention should be paid to the size of the elbow
Most customers basically have no technical knowledge of checking elbows. For example, most production molds are1.25DDifference0.25D. It is used as the raw material for pushing elbows, that is to say, it can save pipes. The weight of the raw material will be quite different, and the price will also be quite different. This is what is called a non-standard elbow, which is much shorter than a standard elbow.
3.Determine whether anti-corrosion elbows are needed
The prices of non-destructive testing and solution treatment, tumbling treatment, sandblasting treatment and elbows without anti-corrosion treatment vary greatly. If the customer needs anti-corrosion treatment, it must be done well. Many manufacturers in the market do not carry out solution treatment and 100% penetration non-destructive testing. Many of them will skip these steps and use sandblasting instead of tumbling. In this way, the manufacturer will significantly reduce costs, the quality of the elbow will decline, and the price will also be lower than that of their peers, thereby increasing the chance of closing a deal.
4.Attention should be paid to the wall thickness of the elbow
Many customers have a certain understanding of the wall thickness of elbows. Although sometimes the wall thickness of elbows almost fails to meet the standard, many people tend to overlook the thickness of the rear arc of elbows. Because during the pushing process of the elbow, the wall thickness will decrease. Therefore, if the diameter barely meets the standard and the back is basically unqualified, experts are generally more familiar with this aspect.
More and more manufacturers will adopt the seamless production method of straight seam elbows, that is, the raw materials for producing elbows, that is, the weld seam is ground before pressing, and then sandblasted after acid washing, so that customers cannot see the seamless nature of the straight seam elbows. Even with advanced flaw detection equipment, it is impossible to distinguish that it is a straight seam elbow. This method can reduce the price of many elbow products, but the quality is greatly reduced.
The tricks of many unscrupulous manufacturers are diverse. The above are the issues that must be noted when purchasing elbows. I hope it can help you buy genuine elbow products.
Foshan Weilihuang Trading Co., Ltd. is a leading manufacturer specializing in the production and sales of international and domestic stainless steel hardware accessories and its own brands. The company is located at Tianjinli Hardware Accessories Center, Lanshi 2nd Road, Chancheng District, Foshan City, Guangdong Province8seat10-12The number (i.e., the main entrance of the market) has an abundant supply of goods, a complete range of varieties, wide coverage, favorable prices, and stable and superior quality!
The company uses high-quality stainless steel and exquisite craftsmanship to ensure there are no weld marks at the interfaces. Its products feature novel designs, elegant craftsmanship, and long-lasting durability. The company has always adhered to the principle of quality first and reputation first. It is equipped with mature production facilities and has strong technical strength, thus ensuring the quality of its products. The company is willing to make unremitting efforts to join hands with our customers to create a win-win situation and provide high-quality products for our partners.
