China Seamless Stainless Steel U-Bend Tubing 0.23-48 Inch OD Cold Drawing Mill Finish for Heat Exchangers for sale

Seamless Stainless Steel U-Bend Tubing 0.23-48 Inch OD Cold Drawing Mill Finish for Heat Exchangers

Price Negotiable

Price: Negotiable

MOQ: Negotiable

Delivery Time: 30 DAYS

Brand: zheheng

Product Description

Seamless Stainless Steel U-Bend Tubes

Manufacturer of precision seamless stainless steel U-bend tubing for heat exchangers and exhaust systems. Available in diameters from 0.23" to 48" (5.8-1219mm) with wall thicknesses from 0.04" to 2" (1.0-50.8mm).

Product Specifications

Material Grades	201, 202, 301, 302, 304, 304L, 310S, 316, 316L, 321, 430, 430A, 309S, 2205, 2507, 2520, 410, 440, 904L, or customized options
Standards	GB, AISI, ASTM, ASME, EN, BS, DIN, JIS
Size Range	O.D.: 0.23" to 48" (5.8-1219mm) W.T.: 0.04" to 2" (1.0-50.8mm)
Length	Maximum 18 meters NPS 1/8"-48" Schedule: 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S per ANSI B36.19/36.10
Surface Finishes	Satin Finish (180#, 240#, 320#), Bright Finish (400#, 600#, mirror), Mill Finish (2B), Hairline Finish (HL/Brushed), Ti-gold, Glossy matt, dull

International Standards Compliance

Russian Standards	08Х17Т, 08Х13, 12Х13, 12Х17, 15Х25Т, 04Х18Н10, 08Х20Н14С2, 08Х18Н12Б, 10Х17Н13М2Т, 10Х23Н18, 08Х18Н10, 08Х18Н10Т, 08Х18Н12Т, 08Х17Н15М3Т, 12Х18Н10Т, 12Х18Н12Т, 12Х18Н9, 17Х18Н9, 08Х22Н6Т
European Standards	1.4301, 1.4307, 1.4948, 1.4541, 1.4878, 1.4550, 1.4401, 1.4404, 1.4571, 1.4438, 1.4841, 1.4845, 1.4539, 1.4162, 1.4462, 1.4362, 1.4410, 1.4501

Chemical Composition

Grade	C	Si	Mn	P	S	Ni	Cr	Mo
201	≤0.15	≤0.75	5.5-7.5	≤0.06	≤0.03	3.5-5.5	16.0-18.0	-
202	≤0.15	≤1.0	7.5-10.0	≤0.06	≤0.03	4.0-6.0	17.0-19.0	-
301	≤0.15	≤1.0	≤2.0	≤0.045	≤0.03	6.0-8.0	16.0-18.0	-
302	≤0.15	≤1.0	≤2.0	≤0.035	≤0.03	8.0-10.0	17.0-19.0	-
304	≤0.08	≤1.0	≤2.0	≤0.045	≤0.03	8.0-10.5	18.0-20.0	-
304L	≤0.03	≤1.0	≤2.0	≤0.035	≤0.03	9.0-13.0	18.0-20.0	-
309S	≤0.08	≤1.0	≤2.0	≤0.045	≤0.03	12.0-15.0	22.0-24.0	-
310S	≤0.08	≤1.5	≤2.0	≤0.035	≤0.03	19.0-22.0	24.0-26.0	-

Quality Control Process

Incoming Raw Material Inspection
Raw Material Segregation to prevent steel grade mix-up
Heating and Hammering End for Cold Drawing
Cold Drawing and Cold Rolling with on-line inspection
Heat Treatment (+A, +SRA, +LC, +N, Q+T)
Straightening, Cutting to specified length, and Finished Measuring Inspection
Mechanical Testing in company laboratories including Tensile Strength, Yield Strength, Elongation, Hardness, Impact, and Microstructure analysis
Packing and Stocking

Heat Treatment Assurance

Utilizing a full-automatic natural gas furnace measuring 24 meters in length, ensuring temperature tolerance within 10℃ for consistent quality.

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