Audited Supplier
304L Welded stainless steel precision tube/pipe
ISO9001:2015 and PED 2014/68/EU certified manufacturer
Product Description
| Material | Stainless Steel 304/304L/316L |
| Shape | Round Tubes |
| Production Standards | ASTM A270, ASTM A269, ASTM A249, ASTM A778, ASTM A789, DIN 11850, EN 10357, EN 10217-7 and so on. |
| Outer Diameter | 16mm - 2000mm ; |
| Thickness | 0.8mm - 20 mm ; |
| Max Length | 3000 Meters; As per customers' request ; |
| Tolerance | According to the Standard, +/-10% Commonly ; |
| Surface Treatment | Bright Annealed (BA) |
| Application | Petrochemical Industry; Chemical Fertilizer Industry; Oil Refining Industry; Oil And Gas Industry; Light Industry And Food Industry; Pulp And Paper Industry; Energy And Environmental Industries. |
| Test | Flaring test; Flattening test; Bending Test; Hydraulic Test; Eddy Current test |
| Design | OEM / ODM / Customized |
| Certificate | ISO9001; ISO14001; PED. |
Stainless Steel Tube Tolerances
| Stainless Steel Heat Exchanger Tube Tolerances | ||||
| Standard | OD(mm) | WT(mm) | Length(meters) | Grade |
| ASTM A249, ASTM A269, EN 10217-7 | 15.88 to 114.3 | 0.3 to 4.0 | Up to 18.3 meter | 1.4301, 1.4306, 1.4404, AISI 304/304l/316l, S31803/S32205, etc |
| Standard | Outside Diameter | Thickness | Length | |
| ASTM A249 (A1016) | <25.4 | ±0.10 | ±10%S | OD<50.8+3-0 OD≥50.8+5-0 |
| ≥25.4~<38.1 | ±0.15 | |||
| ≥38.1~<50.8 | ±0.20 | |||
| ≥50.8~<63.5 | ±0.25 | |||
| ≥63.5~<76.2 | ±0.31 | |||
| ASTM A269 (A1016) | <38.1 | ±0.13 | OD<12.7±15% OD≥12.7±10% | OD<38.1+3.2-0 OD≥38.1+4.8-0 |
Factory Workshop & Production Lines
Quality and Tests
Certificates
Stainless Steel Grades
200series:201,202, etc
300series:301,302,303,304,304L,309,309s,310,310S,316,316L,316Ti,317L,321,347
400series:409,409L,410,420,430,431,439,440,441,444
Others:2205,2507,2906,330,660,630,631,17-4ph,17-7ph, S318039 904L,etc
Duplex stainless steel:S22053,S25073,S22253,S31803,S32205,S32304
Special Stainless Steel:904L,347/347H,317/317L,316Ti,254Mo
304/304L/316L Stainless Steel chemical composition and Mechanical properties
| Chemical Composition | Tensile Strength | Yield Strength | Elongation | Hardness HRB |
| Grade 304 Stainless Steel (100% & MPA) | ||||
| C≤0.08, Mn≤2, P≤0.045, S≤0.03, Si≤0.75, 8≤Ni≤10.5, 18≤Cr≤20 | ≥515 | ≥205 | ≥40 | ≤92 |
| Grade 304L Stainless Steel (100% & MPA) | ||||
| C≤0.03, Mn≤2, P≤0.045, S≤0.03, Si≤0.75, 8≤Ni≤12, 18≤Cr≤20 | ≥485 | ≥170 | ≥40 | ≤92 |
| Grade 316L Stainless Steel (100% & MPA) | ||||
| C≤0.03, Mn≤2, P≤0.045, S≤0.03, Si≤0.75, 10≤Ni≤14, 16≤Cr≤18 | ≥485 | ≥170 | ≥40 | ≤95 |
Stainless Steel Mechanical Properties:
| Stainless Steel Mechanical Properties | ||||||
| Grade | Tensile Strength | Yide Strength | Elogation | Hardness | Solution Annealing | |
| kgf/mm²(N/mm²) | kgf/mm²(N/mm²) | % | HRB(HV) | ºC | ||
| ASTM | TP 304 | ≥53 (515) | ≥21 (205) | ≥35 | ≤90 (200) | 1040ºC-1150ºC Water Quenching |
| TP 304L | ≥50 (485) | ≥17 (170) | ||||
| TP 316 | ≥53 (515) | ≥21 (205) | ||||
| TP 316L | ≥50 (485) | ≥17 (170) | ||||
| JIS | SUS 304 | ≥53 (520) | ≥21 (205) | 1010ºC-1150ºC Water Quenching | ||
| SUS 304L | ≥49 (480) | ≥18 (175) | ||||
| SUS 316 | ≥53 (520) | ≥21 (205) | ||||
| SUS 316L | ≥49 (480) | ≥18 (175) | ||||
| GB | 06Cr19Ni10 | ≥53 (520) | ≥21 (210) | 1010ºC-1150ºC Water Quenching | ||
| 022Cr19Ni10 | ≥49 (480) | ≥18 (180) | ||||
| 06Cr17Ni12Mo2 | ≥53 (520) | ≥21 (210) | ||||
| 022Cr17Ni12Mo2 | ≥59 (480) | ≥18 (180) | ||||
| EN | 1.4301 | (500-700) | ≥20 (195) | ≥40 | 1000ºC-1100ºC Water Quenching | |
| 1.4307 | (470-670) | ≥18 (180) | ||||
| 1.4401 | (510-710) | ≥21 (205) | 1020ºC-1120ºC Water Quenching | |||
| 1.4404 | (490-690) | ≥19 (195) | ||||
Company Introduction
Huzhou Dingshang stainless steel Co., Ltd. is located in Huzhou City Zhejiang province, about one hour to Jiangsu, Shanghai and Hangzhou.
DINGSHANG is professional
China Stainless Steel Pipe Manufacturer and Stainless Steel Tube Suppliers
, the company is specializing in industrial stainless steel welded tubes and special alloys tubes, with an annual production capacity of up to 7,000 tons.
The tubes are produced to conform to GB, ASTM/ASME, JIS, DIN, EN, GOST and ISO standards.
Some special requirements from clients can also be met. Due to excellent technicians, advanced production equipment, satisfactory inspection and testing equipment and perfect quality assurance system,
DINGSHANG has got quality management system ISO9001, EU pressure equipment directive PED and AD2000 all issued by Lloyd's, and also Chinese national special equipment manufacturing license (TS certificate).
DINGSHANG upholds the business philosophy of improvement, trustworthiness and co-win. Based on reliable quality tubes and prompt reply, DINGSHANG's materials have been sold nationwide and exported to more than 20 countries including main economies around the world.
304L Welded stainless steel precision tube/pipe
