A178 GR.D Straight Seam Carbon Steel Tube
GNEE is a manufacturer, supplier and exporter of A178 GR.D ERW Pipe and Tubes which are manufactured from premium quality raw materials. GNEE products are designed as per major international standards and sold in many countries across the globe.
A178 Grade D ERW Pipe is manufactured from Carbon Manganese Steel. This Carbon Manganese Steel has better strength, tensile strength, elastic modulus and elongation properties though it reduces ductility and weldability. Also as a part of manufacturing, heat treatment is done after welding on A178 GR.D ERW Pipe.
Carbon Steel A178 Grade D Pipe has excellent tensile strength and improved corrosion resistance. Hence it is used in steam piping, chemical processing, marine applications, pressure vessels, pulp industry and refining units.
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A178 Grade D carbon steel pipe Chemical Composition
| Element | Composition, % |
| Grade D, Carbon-Manganese Steel | |
| Carbon | 0.27 max |
| Manganese | 1.00–1.50 |
| Phosphorus, max | 0.030 |
| Sulfur, max | 0.015 |
| Silicon | 0.10 min |
A178 Grade D welded pipe Tensile Requirements
| Grade D | |
| Tensile strength, min, ksi [MPa] | 70 [485] |
| Yield strength, min, ksi [MPa] | 40 [275] |
| Elongation in 2 in. or 50 mm, min, % | 30 |
SA178 GR.D ERW tube

Why choose us
gnee has 14 steel production lines, 10 processing equipment for processing, bending, painting, heat treatment, cutting, drilling, beveling, tempering, surface treatment, complete testing equipment and strong technical force. The annual production capacity is more than 60,000 tons.
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FAQ
Q: What product information do I need to provide?
A: You need to provide grade, wall thickness, width and quantity you need to buy.
Q: What are the shipping ports?
A: You can choose other ports according to your needs.
Q: About the product price?
A: Due to the cyclical changes in raw material prices, prices vary from period to period.
Q: What certifications do your products have?
A: We have ISO 9001, SGS, EWC and other certifications.
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