Name: Quality duplex stainless steel welded pipe
SKU: 0

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Quality duplex stainless steel welded pipe

Product type: S32205(022Cr23Ni5Mo3N),2205，S2304,2520,201/201,2507,S32750(022Cr25Ni7Mo4N),S32760(022Cr25Ni7Mo4WCuN) etc
Cold-rolled duplex stainless steel has high strength, good resistance to stress corrosion, pitting corrosion, good welding performance, and has a wide range of applications in petrochemical, shipbuilding, papermaking, seawater desalination, nuclear power and other fields.

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Product details

Duplex stainless steel has the characteristics of austenitic stainless steel and ferritic stainless steel because of its austenitic + ferritic biphase structure, and the content of the two phase structures is basically equivalent. The yield strength can reach 400Mpa ~ 550MPa, which is twice that of ordinary austenitic stainless steel. Compared with ferritic stainless steel, duplex stainless steel has higher toughness, lower brittleness transition temperature, and significantly improved intergranular corrosion resistance and weldability.

Product Parameters

Product Name		304 Stainless Steel 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

Chemical composition of each grade:

Chemical composition	C	Si	Mn	Cr	Ni	Mo	S	P	N
2205	≤ 0.03	≤1.0	≤ 2.0	21.0～23.0	4.5～6.5	2.5～3.5	≤ 0.02	≤ 0.03	—
2507	≤ 0.03	≤1.0	≤ 2.0	21.0～23.0	4.5～6.5	2.5～3.5	≤ 0.02	≤ 0.03	—
2520	≤0.08	≤1.50	≤2.00	24.00-26.00	19.00-22.00	—	≤0.030	≤0.035	—
201	≤0.15	—	5.5～7.50	16.0～18.0	3.5-5.5	—	≤0.03	≤0.06	≤0.25
202	≤0.15	≤1.0	≤7.5~10.0	17.0-19.0	4.00-6.00	—	≤0.03	≤0.06	≤0.25

Performance data of various grades of metal (for reference only) :

Mechanical Properties	Tensile Strength Kb (MPa)	Yield Strength σ0.2 (MPa)	Elongation D5 (%)	Hardness
2205	≥620	≥450	≥25	≤ 293HB
2507	≥795	≥550	≥15	≤ 310HB

Physical properties of each grade:

Physical Performance	Density(g/cm³)	Modulus of Elasticity(Gpa)	Coefficient of Thermal Expansion(10-6/°C)	Coefficient of Thermal Conductivity(W/m*K)	Resistivity(ΜΩ. cm)
2205	7.88	190	13.7	19	80
2507	7.75	200	13	17	80

WORKSHOP EQUIPMENT

The company mainly produces hot rolled steel plate, cold rolled steel plate, carbon steel coil, carbon steel pipe, API pipe, structural steel, steel bar and other products. The company has obtained ISO9001 quality system certification and European CE certification, and provides MTC quality certification according to EN10204.3.1

Companies adhering to the "integrity, quality, win-win" spirit of enterprise, in the years of pioneering and enterprising, never forget the original aspiration, accumulated strength, with wisdom and sweat to lead the development of iron and steel industry.

The annual production capacity of cold rolled steel plate production line is 600,000 tons, and the production specification is 0.12-1.2mm*750-1250mm. The production line adopts advanced full hydraulic on the road, flexible and stable control, combined with thickness gauge to achieve automatic control of AGC plate thickness, so as to ensure product quality.

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