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 Tube, OD 10-50mm, for Seawater Desalination Condenser
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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