X46 Welded Round Steel Pipe

Material Selection: The steel used must meet the chemical composition and mechanical properties specified in API 5L X46 standards, ensuring the right balance of carbon, manganese, phosphorus, sulfur, silicon, and other trace elements .

Manufacturing Processes: X46 pipes can be manufactured through various methods including Electric Resistance Welded (ERW), Longitudinal Submerged Arc Welding (LSAW), and Spiral Submerged Arc Welding (SSAW). Each method has specific parameters that need to be controlled to ensure the integrity and strength of the welds .

Yield and Tensile Strength: The minimum yield strength of X46 steel is 46,400 psi (320 MPa), and the minimum tensile strength is 63,100 psi (435 MPa). These parameters are critical for ensuring the pipe's ability to withstand pressure and stress .

Elongation: API 5L X46 pipes have a minimum elongation of 21%, indicating the ductility of the material. This property is important for the pipe's performance under stress .

Heat Treatment: The pipes undergo heat treatment processes to improve their strength and toughness. This includes processes like normalization, quenching, and tempering, which are denoted by the delivery conditions N, M, and Q .

Micro-alloying Elements: The micro-alloy elements such as Nb, V, and Ti are controlled, with a total content not exceeding 0.15%. These elements significantly influence the pipe's microstructure and properties .

Non-destructive Testing (NDT): Various NDT methods like ultrasonic testing, radiographic testing, and hydrostatic testing are employed to ensure there are no internal defects or leaks in the pipes .

Surface Treatment: The pipes may be coated with anti-corrosion materials such as FBE, 3PE/3LPE, or hot-dip galvanized to protect against environmental degradation .

Q: How do you guarantee the quality of your product?

A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.

Q: Delivery time?

A: We have ready stock for most of material grades in our warehouse. If the material don't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.

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