Gnee (Tianjin) Multinational Trade Co., Ltd.
| Payment Terms | L/C, T/T |
| Supply Ability | 10000 Tons per Month |
| Delivery Time | 30 days |
| Packaging Details | seaworthy export packing with fumigated wooden pallets or steel pallets |
| Standard | ASTM |
| Technique | ERW |
| Grade | ASTM A178 |
| Thickness | 3mm -10mm 20 mm-60mm |
| Length | 10m-12m,12m or as customer's actual reques. |
| Processing Service | Cutting,Bending |
| Brand Name | GNEE |
| Model Number | ASTM A178 |
| Certification | SGS |
| Place of Origin | henan |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 10000 Tons per Month |
| Delivery Time | 30 days | Packaging Details | seaworthy export packing with fumigated wooden pallets or steel pallets |
| Standard | ASTM | Technique | ERW |
| Grade | ASTM A178 | Thickness | 3mm -10mm 20 mm-60mm |
| Length | 10m-12m,12m or as customer's actual reques. | Processing Service | Cutting,Bending |
| Brand Name | GNEE | Model Number | ASTM A178 |
| Certification | SGS | Place of Origin | henan |
| High Light | ASTM A178 Welded Tube ，Electric Resistance Welded Tube ，ASTM A178 Electric Resistance Welded Tube | ||
ASTM A178/A178M and ASME SA178/SA178M are standards for resistance welded carbon and carbon manganese steel boiler and superheater tubes. These standards specify the manufacturing requirements for pipes to ensure their suitability for a variety of industrial applications, particularly in high temperature and pressure environments.
ASTM A178 Welded Pipe is primarily intended for minimum wall thickness resistance welded pipe made from carbon steel and carbon manganese steel. ASTM A178 straight seam steel pipe is mainly used in key parts such as boiler tubes, boiler flues, superheater flues and safety ends. These pipes must meet certain size and thickness requirements to ensure they can withstand high temperatures and pressures and have sufficient strength and durability.
| Element | Grade A, | Grade C, | Grade D |
| Low-Carbon Steel | Medium-Carbon Steel | Carbon-Manganese Steel | |
| Carbon | 0.06-0.18 | 0.35max | 0.27max |
| Manganese | 0.27-0.63 | 0.08max | 1.00-1.50 |
| Phosphorus, max | 0.035 | 0.035 | 0.03 |
| Sulfur, max | 0.035 | 0.035 | 0.015 |
| Silicon | … | … | 0.01 min |
A178 Straight seam welded pipe
Standard: ASTM A178, ASME SA178
Grade: Grade A, Grade C, Grade D
Technique: Electric-Resistance-Welded
Delivery Condition: Annealed, Normalized, Tempered, Heat Treatment, BK, BKS
Section Shape: Round
Surface Treatment: Varnish
Size: (mm)
OD: 12.7mm to 127mm
Wall thickness: 1.5mm to 6.0mm
Length: 6m-25m
Ends: Plain ends or bevel ends
Packaging:Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
Transportation:By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load)
ASTM A178 Class C and Class D ERW steel pipes not suitable for forged welded safety ends shall be of size and thickness within the standard range of 1⁄2 to 5 in. (12.7 to 127 mm) outside diameter with a minimum wall thickness of 0.035 to 0.360 inches (0.9 to 9.1 mm). Other sizes of pipe are available provided they meet all other requirements of the specification.
During the production process, D-grade steel should be killed and the pipes should be made by resistance welding. After welding, all tubing should be heat treated at 1650°F (900°C) or higher and then cooled in air or in the cooling chamber of a controlled atmosphere furnace. For cold drawn tubing, heat treatment should be performed at 1200°F (650°C) or higher after the final cold drawing pass.
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2008
Total Annual:
3000000-3500000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Gnee Steel Co.,Ltd (GNEE) is the affiliated company for ANGANG GROUP who are one large state-owned iron and steel group located in Henan, China. GNEE are specialized in manufacturing and supplying large quantities Seamless steel pipes and Shipping-building plates, We are provide high qu... Gnee Steel Co.,Ltd (GNEE) is the affiliated company for ANGANG GROUP who are one large state-owned iron and steel group located in Henan, China. GNEE are specialized in manufacturing and supplying large quantities Seamless steel pipes and Shipping-building plates, We are provide high qu...
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