Home > Products > Industrial Pipeline Series > Welded/ERW/Hfw Austenitic and Duplex Seamless Welded Stainless Steel Pipe/Tube ASTM A312, ASTM A269, ASTM213
Welded/ERW/Hfw Austenitic and Duplex Seamless Welded Stainless Steel Pipe/Tube ASTM A312, ASTM A269, ASTM213
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- 8 days
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Product Details
| Type | Seamless | Surface Treatment | Black | |
| Usage | Pipeline Transport, Boiler Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Special Purpose | Material | Alloy Steel | |
| Section Shape | Round | Delivery Time | 8-14 days | |
| Model Number | 304 316 310 904 2205 2507 | Processing Service | Bending, Welding, Decoiling, Punching, C | |
| Specification | 0D 3in under |
Product Description

Zhongzheng Stainless Steel Co., Ltd. was established in 2018 with aregistered capital of 20 million yuan. lt is a manufacturing company thatintegrates the production of special materials, manufacturing andprocessing, sales, and technology development. The company covers anarea of 2,000 square meters and has 200 employees. it has built worldclass stainless steel seamless pipe (hot piercing, cold drawing, cold rollingproduction lines, precision steel pipe production lines, and large, mediumand small-sized welded pipe production lines. The company has beencommitted to providing high performance, high precision, hightemperature-resistant, high pressure-resistant, and corrosion-resistantsolutions and technical services for industrial equipment pipeline systems.The company specializes in producing a series of steel pipes, pipe fittingsflanges, etc., such as high-temperature (nickel-based) alloys, austeniticduplex steel, urea grade stainless steel, super stainless steel, etc. Thecompany is equipped with an annual production capacity of 5,000 tons ofstainless steel seamless pipe production line, 7,000 tons of welded pipeproduction line, and 500 tons of pipe fittings production line, etc. lt canoroduce stainless steel seamless pipes with diameters ranging from ?Φ?6 to?Φ?762 and wall thicknesses ranging from 0.5 to 70 mm, stainless steelwelded pipes with diameters ranging from ?Φ?15 to ?Φ?2200 and wallthicknesses ranging from 0.5 to 80 mm, pipe fittings, and various stainlesssteel ingots, round steel, rough pipes, etc., according to customerrequirements and in accordance with standards such as GB, ASTM, etc.




| Material | Stainless Steel Seamless Pipe |
| Steel Grade | 200 Series: 201,202 300 Series: 301,304,304L,304H,316,316L,316Ti,317L,321,309s,310s 400 Series: 403,405,409L,410,416,420,431, 434 Duplex Steel: 904L,2205,2507,2101,2520,2304 |
| Thickness | 0.1mm-100mm (as required) |
| Length | 6m,9m,12m (as required) |
| Surface | Pickling,Polished,Bright,Hairline |
| Technique | Cold Rolled, Hot Rolled |
| Treatment | Welded or Seamless |
| Welding Line Type | ERW,EFW,Seamless,Spiral Welded |
| Shape | Round,Square,Rectangular,Oval |
| Color | Golden/Rose Gold/Silver/Black/Red/Green/Blue/as required |
| Tolerance | As standard |
| Delivery Time | 7-10days |
| Payment Terms | T/T, L/C, D/P, Paypal, Trade Online |
| MOQ | 0.5 Ton |
| Application | Liquid transport, Boiler pipe, Hydraulic,Automobile,Mining, Construstion |
Stainless steel tube and pipe (ss pipe) is utilized for many conveyance and structural applications where resistance to corrosion is an important attribute. mainly maintains inventories of both welded and seamless pipe. This product is produced to the ASTM A312 specification and is available from stock in both the T304/L and T316/L grades. Nominal | Outside Diameter | Sch 5S | Sch 10S | Sch-40S | Sch-80S | Sch-160S | Sch-XXS | |||||||
mm | inch | mm | WT mm | Weight (Kg/mt) | WT mm | Weight (Kg/mt) | WT mm | Weight (Kg/mt) | WT mm | Weight (Kg/mt) | WT mm | Weight (Kg/mt) | WT mm | Weight (Kg/mt) |
3 | 1/8 | 10.3 | 1.24 | 0.276 | 1.24 | 0.28 | 1.73 | 0.37 | 2.41 | 0.47 | - | - | - | - |
6 | 1/4 | 13.7 | 1.24 | 0.390 | 1.65 | 0.49 | 2.24 | 0.631 | 3.02 | 0.80 | - | - | - | - |
10 | 3/8 | 17.1 | 1.24 | 0.490 | 1.65 | 0.63 | 2.31 | 0.845 | 3.20 | 1.10 | - | - | - | - |
15 | 1/2 | 21.3 | 1.65 | 0.800 | 2.11 | 1.00 | 2.77 | 1.27 | 3.75 | 1.62 | 4.75 | 1.94 | 7.47 | 2.55 |
20 | 3/4 | 26.7 | 1.65 | 1.03 | 2.11 | 1.28 | 2.87 | 1.68 | 3.91 | 2.20 | 5.54 | 2.89 | 7.82 | 3.63 |
25 | 1 | 33.4 | 1.65 | 1.30 | 2.77 | 2.09 | 3.38 | 2.50 | 4.55 | 3.24 | 6.35 | 4.24 | 9.09 | 5.45 |
32 | 1 1/4 | 42.2 | 1.65 | 1.65 | 2.77 | 2.70 | 3.56 | 3.38 | 4.85 | 4.47 | 6.35 | 5.61 | 9.70 | 7.77 |
40 | 1 1/2 | 48.3 | 1.65 | 1.91 | 2.77 | 3.11 | 3.68 | 4.05 | 5.08 | 5.41 | 7.14 | 7.25 | 10.16 | 9.54 |
50 | 2 | 60.3 | 1.65 | 2.40 | 2.77 | 3.93 | 3.91 | 5.44 | 5.54 | 7.48 | 8.74 | 11.1 | 11.07 | 13.44 |
65 | 2 1/2 | 73.0 | 2.11 | 3.69 | 3.05 | 5.26 | 5.16 | 8.63 | 7.01 | 11.4 | 9.53 | 14.9 | 14.2 | 20.39 |
80 | 3 | 88.9 | 2.11 | 4.51 | 3.05 | 6.45 | 5.49 | 11.30 | 7.62 | 15.2 | 11.1 | 21.3 | 15.24 | 27.65 |
100 | 4 | 114.3 | 2.11 | 5.84 | 3.05 | 8.36 | 6.02 | 16.07 | 8.56 | 22.3 | 13.49 | 33.54 | 17.12 | 41.03 |
125 | 5 | 141.3 | 2.77 | 9.47 | 3.40 | 11.57 | 6.55 | 21.8 | 9.53 | 31.97 | 15.88 | 49.11 | 19.05 | 57.43 |
150 | 6 | 168.3 | 2.77 | 11.32 | 3.40 | 13.84 | 7.11 | 28.3 | 10.97 | 42.7 | 18.2 | 67.56 | 21.95 | 79.22 |
200 | 8 | 219.1 | 2.77 | 14.79 | 3.76 | 19.96 | 8.18 | 42.6 | 12.7 | 64.6 | 23.0 | 111.2 | 22.23 | 107.8 |
250 | 10 | 273.1 | 3.40 | 22.63 | 4.19 | 27.78 | 9.27 | 60.5 | 12.7 | 96.0 | 28.6 | 172.4 | 25.40 | 155.15 |
300 | 12 | 323.9 | 3.96 | 31.25 | 4.57 | 36.00 | 9.52 | 73.88 | 12.7 | 132.0 | 33.32 | 238.76 | 25.40 | 186.97 |
350 | 14 | 355.6 | 3.96 | 34.36 | 4.78 | 41.3 | 11.13 | 94.59 | 19.05 | 158.08 | 35.71 | 281.70 | - | - |
400 | 16 | 406.4 | 4.19 | 41.56 | 4.78 | 47.29 | 12.7 | 123.30 | 21.41 | 203.33 | 40.46 | 365.11 | - | - |
450 | 18 | 457.2 | 4.19 | 46.80 | 4.78 | 53.42 | 14.27 | 155.80 | 23.8 | 254.36 | 45.71 | 466.40 | - | - |
500 | 20 | 508.0 | 4.78 | 59.25 | 5.54 | 68.71 | 15.09 | 183.42 | 26.19 | 311.2 | 49.99 | 564.68 | - | - |
600 | 24 | 609.6 | 5.54 | 82.47 | 6.35 | 94.45 | 17.48 | 255.41 | 30.96 | 442.08 | 59.54 | 808.22 | - | - |

PMC has always inculcated and followed sten quality standards for all of its manufacturing processes. All the materials used by PMC are of premium quality and compatible with latest machineries and manufacturing technologies. The technical and commercial quality guidelines of PMC are set to high standards. A quality control team supervises quality assurance and control aspects along with the entire process system by recognizing and associating with the quality circle. The quality control tests are conducted regularly in order to maintain a consistent and uniform product quality.
| Destructive Testing | |||||
| ? | Tensile Test | ? | Flaring Test | ? | IGC Test - Prac A,B,C&E |
| ? | Hardness Test | ? | Flange Test | ? | Reverse Flattening Test |
| ? | Flattening Test | ? | Reverse Test - Bend Test | ? | Impact Test |
| Non- Destructive Testing | |||||
| ? | Hydrostatic Test | ? | P.M.I Test | ? | Dye Penetrant Test |
| ? | Eddy Current Test | ? | Spectro Test | ? | Baroscopic Test |
| ? | Air Under Water Test | ? | Ultrasonic Test |
VALUE-ADD SERVICES BY PMC
| Stainless steel pipe polish | Stainless can polish nearly any stainless steel pipe item to a #4 polish, #6 Polish, #7 polish or a #8 mirror finish. Stainless steel polished pipes can also be cut to size. |
| Stainless Steel Pipe Beveling | Stainless can bevel the edges of stainless steel plate to prepare for welding or other processes. |
| Stainless Steel Pipe Honing & Turning | Stainless can hone pipe and tube, using a precision abrasion process in order to obtain a desired finish or close dimensional tolerance. |
| Heatreating & Annealed | Some grades of stainless steel pipe can be heatreated to change the mechanical properties. |
| Positive Material Identification (PMI) | Stainless can perform PMI testing in house for most stainless steel grades, or we can work with independent labs to complete PMI in order to meet customer specifications. |
| UT Testing | In some cases, UT testing of the stainless steel plates may be required. We can assist you with this requirement. |

FAQ
Q1. What are your company's main products ?
A2: Our main products are stainless steel seamless pipe, welded pipe, fittings(flange,elbow, tee, reducer,nipple etc.), and sheets, pipes, coils, strips, bars and channels.
Q2. What are the advantages of your company ?
A2: Offering finest quality-best in class products-at the most advantageous rates, as our forte.
Q3. How do you control quality ?
A3: A quality control team supervises quality assurance and control aspects along with the entire process system by recognizing and associating with the quality circle. The quality control tests are conducted regularly in order to maintain a consistent and uniform product quality.
Q4. How many coutries you already exported ?
A4: Exported to more than 50 countries mainly from Middle East, Russia, United States, Canada, Italy, Germany, Australia, Egypt, Japan, Indonesia, Bangladesh, Turkey, India, etc.
Q5. Can you provide sample ? Do you support OEM ?
A5: Yes. Small samples in store can be provided for free. Customized samples will take about 2-3days.
Q6: What's your payment terms ?
A6: By T/T(30% deposit in advance, balance 70% before shipment),, L/C after sight 30~120 days. Western Union, Paypal, or Trade Online.
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Company Profile
Zhongzheng Stainless Steel Co., Ltd. is a China-based manufacturer specializing in R&D, production, and distribution of stainless steel products. Established in the early 2000s, it serves industries including construction, machinery, food/medical equipment, and energy with precision tubes, sheets, profiles, and custom components.
Contact Us
- Zhongzheng Stainless Steel Co., Ltd.
- Contact nameLaijing Bu Chat Now
- AddressRoom 104-07, Building 5, Jinghu Technology Park Huanajinghu Garden, Donglihu Subdistrict Dongli District,
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