Seamless steel pipe is a steel pipe made by heating a solid steel billet at high temperature and then processing it through perforation, rolling and other processes. Its notable feature is that it has no welding seams and has a continuous tubular structure as a whole.

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Description

Seamless stainless steel pipe is a long steel strip with a hollow cross-section and no seams around the perimeter. It is made by punching a solid steel billet and then rolling or drawing it, which is fundamentally different from the steel made by welding a coiled plate.

Product Name		Stainless Steel Seamless Pipe
Type		Steel Pipe
Outer diameter	Round Tube	4mm-200mm
	Square Tube	1010mm-100100mm
	Rectangular Tube	1020mm-50100mm
Wall Thickness		0.6mm-6.0mm
Length		1-6 meters, Length can be customized
Standard		ASTM, AISI, JIS, GB, DIN, EN, etc.
Surface		Black, Bright Polished, Rough Turning, Matt Surface Treatment, No. 4. BA, etc.
Scope of Application		Common applications for stainless steel pipes include food processing, Textile operations, Breweries, Water treatment plants, Oil and gas processing, Fertilizers and pesticides, Chemical applications, Construction, Pharmaceuticals, Auto parts, etc.
Certificate		ISO, SGS, BV, etc.
Production Technology		Hot Rolling, Cold Rolling
Edge Processing		Edging, Trimming

Product Display

Black Surface Seamless Carbon Steel Tube for Q195-Q345 Grade

Characteristics of seamless stainless steel pipes
The characteristics of seamless stainless steel pipes are high strength, strong corrosion resistance, resistance to high temperature and high pressure, no welds, good structural integrity, good cross-sectional uniformity, long service life, and are suitable for harsh environments.

Application areas of seamless stainless steel pipes
It is precisely because of its excellent performance that seamless stainless steel pipes are used in fields with extremely high requirements for safety and reliability: petrochemical industry, machinery manufacturing, aerospace, food and medicine, energy industry, architectural decoration, etc.

FAQ

1. Q: What is the difference between seamless pipes and welded pipes?

Structure: Seamless pipes have no welds, and welded pipes have longitudinal or spiral welds;

Strength: Seamless pipes have higher overall strength and are suitable for high-pressure scenarios (such as boilers and hydraulic systems);

Cost: The production process of seamless pipes is complex, and the price is 10%-30% higher than that of welded pipes.

2. Q: How to choose the material of seamless pipe?

General environment: choose Q235 or 20# carbon steel (low cost, easy to process);

Corrosive environment: choose 304/316L stainless steel or galvanized seamless pipe;

High temperature and high pressure: choose 15CrMo, 12Cr1MoV and other alloy pipes (specific temperature and pressure parameters must be provided).

3. Q: Can the size of seamless pipe be customized?

Regular specifications (outer diameter 6-630mm, wall thickness 0.5-50mm) can be customized in length (such as fixed length 6m, 9m);

Special caliber or wall thickness requires mold production, the minimum order quantity is higher (usually ≥5 tons), and the delivery time is extended by 2-4 weeks.

4. Q: How to detect the quality of seamless pipes?

Answer:

Appearance: no cracks, folds, or scars on the surface, and uniform wall thickness;

Non-destructive testing: ultrasonic (UT) and eddy current (ET) detection of internal defects;

Pressure test: water pressure test (such as water pressure 10MPa, pressure maintenance for 5 minutes without leakage).

5. Q: How to prevent rust during transportation of seamless pipes?

Answer:

Short-term transportation: can be naked in dry environment, and covered with waterproof cloth in humid environment;

Long-term storage: stored in a dry warehouse, ≥20cm from the ground, regularly check the surface rust, and re-oil if necessary.