Welded steel pipes are widely used in industries such as construction, manufacturing, and petroleum to transport fluids. However, there are many types of welded steel pipes on the market and their quality varies. Therefore, you need to pay special attention to some important matters when purchasing to ensure that the quality of the steel pipes you purchase meets expectations and can meet your needs. So what should we pay attention to when purchasing welded pipes? What kind of welded steel pipe can meet the acceptance standards? Read on to learn more.
Things to note when purchasing welded steel pipes:
1) Choose a reliable supplier
There are a variety of welded steel pipe suppliers on the market, and it is important to find an experienced and reputable supplier to ensure that the welded steel pipe you purchase meets international standards and has the necessary quality certifications. The specific inspection contents are as follows:
1. Check the qualifications of the production enterprise, whether the business license, organization code certificate, tax registration certificate, production and operation license and other qualification materials are complete.
2. Look at cases, examine the supplier's performance, and the status of projects it has served in the past.
3. Do you have a self-built logistics fleet? Choosing a service provider with a self-built logistics fleet can reduce transportation costs and, most importantly, ensure timely delivery.
4. After-sales service: Whether there is a sound and reliable after-sales service guarantee system. Quality problems that arise during the acceptance and subsequent use of the goods must be resolved in a timely manner.
2) Conduct sufficient market research and comparison before purchasing
It is very important to understand the types, materials, specifications, prices and other information of welded steel pipes on the market. You can obtain relevant information through the Internet, inquiry, visiting exhibitions, etc., and communicate with multiple suppliers to get the most appropriate purchasing advice.
Secondly, detailed specifications and quantity planning of the required welded steel pipes are required before purchasing. Be sure to fully analyze and evaluate the specifications, quantity and quality requirements of the required steel pipes, and communicate clearly with suppliers to ensure that the steel pipes purchased meet the needs.
In addition, in the procurement process, timely communication is the key. Being able to maintain close contact with suppliers and solve problems in a timely manner is a necessary condition to ensure the progress of procurement. In addition, asking the supplier whether it provides after-sales service is also an issue that cannot be ignored. Sometimes, the purchased steel pipes may have some quality problems, and the after-sales service provided by the supplier can help us solve these problems.
Acceptance standards for welded steel pipes:
Quality testing is an essential step. When purchasing welded steel pipes, you need to ensure that the supplier can provide quality certificates and test reports for relevant products. You can ask the supplier to provide relevant quality certification documents, or you can entrust a third-party agency to conduct quality inspection if necessary.
1. Check whether the product quality certificate, material instructions, warranty document and other warranty materials are complete.
2. Check the appearance of the welded pipe. The surface is smooth and flat, the weld is dense without burrs, there is no oil spot corrosion, no extrusion deformation, and the cross section is flat.
3. Use a micrometer to check whether the outer diameter and wall thickness of the welded pipe meet the requirements. The deviation from the standard wall thickness shall not exceed 3%-5%.
4. Use a flaw detector to conduct non-destructive testing on the welded pipe.
5. Conduct bending and tensile strength tests as required. Bend the welded pipe 30 degrees and there will be no cracks at the bend.
Price, while important, is not the only consideration. Of course, price is also one of the important considerations in the purchasing process, but we cannot make decisions based solely on price. Compared with lower prices, we should pay more attention to the quality of welded steel pipes and the reputation of suppliers to ensure that the purchased steel pipes meet expectations.
In summary:
When purchasing welded steel pipes, factors such as supplier reliability, market research and comparison, detailed specifications and quantity plans, quality inspection, price, timely communication and after-sales service need to be considered. Only by comprehensively considering these factors can we make a wise decision on the purchase of welded steel pipes and ensure that the quality and performance of the purchased steel pipes meet the requirements.
United Steel Industry As the most important steel pipe manufacturer and exporter in China, in the past 20 years, we have completed more than 100 projects, with partners in more than 100 countries, and established relationships with oil and gas and EPC companies in many countries business relationship.
For more information about the product price, catalog and rolling mill inspection certificate,
please consult:Email:Sales@usisteels.com
