Concrete Pump Truck Boom Pipe

• Customization: Available
• Type: Concrete Pipe
• Twin Hardened Pipe: St52+Nm600-1
• Model NO.: DN125/5′′ 3000mm
• Flange: St52+Inner Layer Cr35
• Standard: DIN, ASTM,API
• Water Pressure Test: 460bar
• Surface Coating: Baking Paint
• Length: Standard 3m/Customized
• Transport Package: Standard Export Package
• Specification: Size -DN125 5′′- 133.2mm/139.7mm
• Trademark: XiMai
• Origin: China
• HS Code: 8413910000
• Production Capacity: 50000 PCS/Month

Product Description

ST52 Outer layer  
Good toughness, plasticity and welding performance.

Yield strength: ≤16mm: ≥345MPa
Tensile strength: 450-630Mpa.
Elongation: ≥21%.
Impact test: -20ºC: ≥34kJ/m2

NM600-1 Inner layer
The chemical composition of the alloy wear-resistant layer has carbon content of 4-5%,  chromium content of 25-30%, and a volume fraction of Cr7C3 carbides in its metallographic structure of more than 50%. The surface hardness is HRC56-62, and the hardness after quenching can reach HRC67 .