Yuhong Group Co.,Ltd
| Payment Terms | L/C, T/T |
| Supply Ability | 800 Tons/ month |
| Delivery Time | 30 days |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap etc. |
| Standard: | ASME SB111 |
| Shape | Round |
| Length | 6m -12m, Customers' requirement |
| Testing | Flattening Test, Expansion Test, Mercurous Nitrate Test, Ammonia Vapor Test, Chemical Analysis, Grain Size, Tension Testing |
| Application | Shell and tube heat exchanger ASME standard |
| Brand Name | Yuhong |
| Model Number | ASME SB111 C68700 Seamless Brass Tubes |
| Certification | ABS, BV, DNV-GL , PED, TUV, LR, KR, NK, CCS. |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 800 Tons/ month |
| Delivery Time | 30 days | Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap etc. |
| Standard: | ASME SB111 | Shape | Round |
| Length | 6m -12m, Customers' requirement | Testing | Flattening Test, Expansion Test, Mercurous Nitrate Test, Ammonia Vapor Test, Chemical Analysis, Grain Size, Tension Testing |
| Application | Shell and tube heat exchanger ASME standard | Brand Name | Yuhong |
| Model Number | ASME SB111 C68700 Seamless Brass Tubes | Certification | ABS, BV, DNV-GL , PED, TUV, LR, KR, NK, CCS. |
| Place of Origin | China | ||
| High Light | Aluminum Brass Tube ASTM SB111 ，C68700 Aluminum Brass Seamless Tubes ，Evaporator Aluminum Brass Seamless Tubes | ||
ASME SB111 C68700 Seamless Brass Tubes for Desalination of Seawater
C68700 is an aluminum brass alloy with arsenic addition, specifically designed for harsh environments such as seawater desalination. Its composition (Cu: 76-79%, Al: 1.8-2.5%, As: 0.02-0.06%, Zn: balance) ensures exceptional corrosion resistance in seawater and high thermal conductivity. The arsenic content further enhances resistance to dezincification, a critical feature for long-term durability in marine applications.
The production process of Brass Tube
Raw Materials
Melting&Casting
Extrusion
Rolling
Intermediate Heat Treatment 1
Straightening
Three-line Drawing
Acid Washing
Intermediate Heat Treatment 2
Two Cascade Drawing
Cutting&Cleaning
Eddy Current Test
Final Heat Treatment
Packing
Shipping
Comparison Table of Brass Tube Alloy
| Implementation Standard | Alloy Specifications |
| GB/T 5231 | HAI 77-2 |
| HSn70-1, HSn72-1 | |
| ASTM B111 | C68700 |
| C44300 | |
| BS EN12451 | CuZn20Al2As |
| CuZn28Sn1As | |
| JIS H3300 | C6870, C6871, C6872 |
| C44300 | |
| AS 1569 | C68700 |
| C44300 |
Chemical Composition of Brass Tube Alloys
| Implementation Standard | Alloy | Cu (%) | Al/Sn (%) | As (%) | Fe (%) | Pb (%) | Other Impurities (%) | Zn (%) | Total Impurities (%) |
| GB/T 5231 | HAl77-2 | 76.0-79.0 | 1.8-2.5 (Al) | 0.02-0.06 | ≤0.06 | ≤0.07 | ≤0.07 (Other) | Balance | ≤0.6 |
| ASTM B111 | C68700 | 76.0-79.0 | 1.8-2.5 (Al) | 0.02-0.06 | ≤0.06 | ≤0.07 | ≤0.07 (Other) | Balance | ≥99.5 (Sum) |
| ASME SB111 | |||||||||
| JIS H3300 | C6870 | 76.0-79.0 | 1.8-2.5 (Al) | 0.02-0.06 | ≤0.05 | ≤0.05 | ≤0.05 (Other) | Balance | - |
| JIS H3300 | C6871 | 76.0-79.0 | 1.8-2.5 (Al) | 0.02-0.06 | ≤0.05 | ≤0.05 | ≤0.05 (Other); Si: 0.20-0.50 | Balance | - |
| JIS H3300 | C6872 | 76.0-79.0 | 1.8-2.5 (Al) | 0.02-0.06 | ≤0.05 | ≤0.05 | ≤0.05 (Other); Ni: 0.20-1.0 | Balance | - |
| BS EN12451 | CuZn20Al2As (CW702R) | 76.0-79.0 | 1.8-2.3 (Al) | 0.02-0.06 | ≤0.07 | ≤0.05 | Ni ≤0.1; P ≤0.01; Mn ≤0.1; ≤0.3 (Other total) | Balance | - |
| AS 1569 | C68700 | 76.0-79.0 | 1.8-2.5 (Al) | 0.02-0.06 | ≤0.06 | ≤0.07 | ≤0.07 (Other) | Balance | - |
| GB/T 5231 | HSn70-1 | 69.0-71.0 | 0.8-1.3 (Sn) | 0.03-0.06 | ≤0.10 | ≤0.05 | ≤0.05 (Other) | Balance | ≤0.3 |
| GB/T 5231 | HSn72-1 | 70.0-73.0 | 0.9-1.2 (Sn) | 0.02-0.06 | ≤0.06 | ≤0.07 | ≤0.07 (Other) | Balance | ≤0.4 |
| ASTM B111 | C44300 | 70.0-73.0 | 0.9-1.2 (Sn) | 0.02-0.06 | ≤0.06 | ≤0.07 | ≤0.07 (Other) | Balance | ≥99.6 (Sum) |
| ASME SB111 | |||||||||
| JIS H3300 | C4430 | 70.0-73.0 | 0.9-1.2 (Sn) | 0.02-0.06 | ≤0.05 | ≤0.05 | ≤0.05 (Other) | Balance | - |
| BS EN12451 | CuZn28Sn1As (CW706R) | 70.0-72.5 | 0.9-1.3 (Sn) | 0.02-0.06 | ≤0.07 | ≤0.05 | Ni ≤0.1; P ≤0.01; Mn ≤0.1; ≤0.3 (Other total) | Balance | - |
| AS 1569 | C44300 | 70.0-73.0 | 0.8-1.2 (Sn) | 0.02-0.06 | ≤0.06 | ≤0.07 | ≤0.07 (Other) |
|
Primary Applications in Seawater Desalination
Heat Exchangers and Condensers
Corrosion Resistance
Mechanical Performance
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
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