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Company Profile
Zhejiang Zhongzheng Stainless Steel Manufacturing Co., Ltd. specializes in stainless steel seamless tubes, with a range of 6-325mm in diameter. The materials include 304, 321, 316L, 2205, etc. Our stainless steel products are widely used in industries such as petroleum, chemical engineering, chemical fiber, metallurgy, medical machinery, papermaking, thermal insulation and refrigeration, mechanical equipment, food, power, water conservancy, construction, submarine engineering, marine shipping, and environmental protection. Zhejiang Zhongzheng Stainless Steel Manufacturing Co., Ltd. is a strong company that values credit, adheres to contracts, and guarantees product quality. With the business feature of multiple varieties and the principle of selling at a small profit but a large volume, we have won the trust of many customers. All the staff of our company sincerely welcome your inquiries!
Fabrication Standard: EEMUA 144, ASTM B111
Dimensions: OD219 x 3.5 x 6000MM
Quantity: 180 Lengths / 22,580 KG
Order Time: August, 2021
Application: Offshore Platform Construction
Project Site: Singapore & Indonesia
| CHEMICAL COMPOSITION (%) | ||||||||||
| Cu | Ni | Fe | Mn | P | S | Pb | C | Zn | Si | Others Total |
| Rem. | 10.42 | 1.64 | 0.77 | 0.0018 | 0.0023 | 0.0018 | 0.0021 | 0.0012 | / | |
| Rem. | 10.43 | 1.63 | 0.73 | 0.0026 | 0.0037 | 0.0028 | 0.0036 | 0.0045 | / | |
| Rem. | 10.43 | 1.62 | 0.73 | 0.0031 | 0.0040 | 0.0021 | 0.0032 | 0.0039 | / | |
| Rem. | 10.40 | 1.62 | 0.71 | 0.0034 | 0.0036 | 0.0023 | 0.0026 | 0.0055 | / | |
Fabrication Standard: EN12451 CW354H, ASTM B111
Dimensions: OD19.05 x 1.65 (MWT) x 4877 MM
Quantity: 800 Lengths / 11,080 KG
Order Time: July, 2019
Application: High-pressure Boiler Tubing
Project Site: Ghana
| CHEMICAL COMPOSITION (%) | ||||||||||
| Cu | Ni | Fe | Mn | P | S | Pb | C | Zn | Si | |
| Rem. | 30.42 | 0.71 | 0.77 | 0.0015 | 0.0023 | 0.0018 | 0.0031 | 0.0035 | / | |
| Rem. | 30.43 | 0.70 | 0.73 | 0.0021 | 0.0021 | 0.0018 | 0.0035 | 0.0035 | / | |
| Rem. | 30.43 | 0.73 | 0.73 | 0.0016 | 0.0018 | 0.0018 | 0.0032 | 0.0039 | / | |
| Rem. | 30.40 | 0.70 | 0.71 | 0.0015 | 0.0016 | 0.0018 | 0.0035 | 0.0035 | / | |
Detailed Photos
Copper-Nickel Alloy Tube Standard Specification Equivalency:
| Grade | USA | U.K | Germany | Japan |
| China BG | ASTM | BS | DIN | JIS H |
| BFe10-1-1 | C70600 | CN102 | CuNi10Fe1Mn | C7060 |
| BFe30-1-1 | C71500 | CN107 | CuNi30Mn1Fe | C7150 |
Welcome toZhongzheng Stainless Steel Co., Ltd.., where we manufacture high-quality industrial metal tubing products with precision and care. Our state-of-the-art facilities include mechanical properties test machines, supersonic testing machines, eddy current test machines, hydrostatic test machines, and spectrum analyzers for chemical composition analysis. This ensures that our manufacturing processes meet the highest standards, providing you with top-notch quality products.
We welcome customers and third-party inspections from reputable companies such as SGS, BV, MOODY, Lloyd's, TUV, and DNV to verify the quality of our products. Your satisfaction and trust are our top priorities.
Are you a manufacturer or a trading company?
We are a manufacturer for most sizes listed and can assist with the entire project package if in need.Do you have a certified quality assurance system?
Yes, we boasts ISO 9001:2015 certified factories.Can I visit your plant before placing an order?
Of course, we welcome and respect all clients' plant visits.What is the market percentage for domestic and international sales?
Our domestic market share is approximately 70%, with international sales accounting for less than 30% over the past 5 years.
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