Tianjin Shengying Baihui Co., Ltd.

Large Diameter Seamless Steel Pipe Straight Seam Welded Pipe Spiral Steel Pipe

Key Features of Spiral Pipe:

1. Flexible Production: Diameter and thickness can be adjusted to meet various engineering needs.
2. Even Welds: Spiral welds distribute stress evenly, enhancing strength.

3. High Adaptability: Suitable for diverse environments, including underground and underwater, with strong corrosion resistance.

4. Strict Quality Control: Non-destructive testing ensures weld integrity, with additional hydrostatic and performance testing.

5. Wide Applications: Ideal for oil and gas transport, water supply, and infrastructure projects.

Product Details

The most common welding method for spiral pipes is Double Submerged Arc Welding (DSAW). During the forming process, the edges of the steel strip are welded together to form a spiral seam. The welding can be performed on both the inner and outer sides simultaneously to ensure weld strength and sealing.

Internal Welding:

Internal welding is conducted on the inner wall of the pipe, creating the initial weld.

External Welding:

External welding is performed on the outer wall of the pipe to further enhance the weld quality.

Weld Inspection:

After welding, non-destructive testing methods such as ultrasonic testing and X-ray inspection are used to ensure the quality of the welds, avoiding cracks, pores, and other defects.

Cutting:

The spiral pipes are cut to the desired length using automated cutting equipment, based on customer requirements.

Pipe End Processing:

The pipe ends are processed, usually including beveling, flattening, or adding protective caps to facilitate subsequent welding or connection.

Pressure Testing:

The finished spiral pipes typically undergo hydrostatic testing to ensure they can withstand the specified working pressure.

Surface Treatment:

Depending on customer needs, the spiral pipes can undergo surface treatments such as coating or anti-corrosion treatments to improve corrosion resistance and extend the pipe's service life.

Our steel pipe products undergo rigorous quality control to ensure each pipe meets industry standards and customer requirements. No matter what your project needs, we provide the best solutions for you.

Product Description

Item	Details
Product Name	Spiral Welded Steel Pipe
Standard	API 5L, ASTM A139, ASTM A252, EN10217, EN10219
Grade	Q235, Q345, L245, L290, L360, X42, X52, X60
Surface Finish	Black, Painted, Galvanized, 3LPE Coated, Bitumen Coated
International Standard	ISO 9001-2015, CE Certificate, BV Certificate
Packing	1. In bulk
	2. Packed by steel strips
	3. Woven cloth with 7 slats
	4. As per customer requirements
Main Market	Middle East, Africa, Asia, Europe, South America, Australia
Country of Origin	China
Productivity	8,000 Tons per month
Remark	1. Payment terms: T/T, L/C
	2. Trade terms: FOB, CFR, CIF, DDP, EXW
	3. Minimum order: 2 tons
	4. Delivery time: Within 30 days