Model Number: Derbo-21 Brand Name: Derbo Steel Key Specifications/Special Features: Out diameter: 21.3mm-609.6mmThickness: SCH30 STD 40 80 160 XXSLength: SRL; DRL; 5.8M; 11.8M,Fixed Length as per client’s requirements.Steel standard: ASTM A519; ASTM A213; ASTM A335; DIN17175
Steel material: 4130; 4140; 4145; T11-T91; P11-P91; 15Mo3 34CrMo4
Surface: bare, black painting, anti-corrosion coating (3LPE 3LPP FBE)
Package: plain/bevel end with end caps, waterproof packing, bare packing, in bundle, nest packing, standard export packing
Inspection: SGS; BV.
Certificate:ISO9001; 2000
Date of delivery: after received deposit 15-60 days according to the quantity
Payment: T/T, 100% L/C at sight, Western Union, D/A, D/P, O/A
Port of shipment: Xingang Tianjin; Shanghai Port; Guangdong port; Ningbo Port; Qingdao port.
Our advantages

1. Professional sales team with more than 10 years of experience in steel industrial
2. Technical engineer from oil company and third party inspection company
3. One-stop service for steel industry, especially for pipeline project application
4. Rich cooperation experience with Shell, Lukoil, Samsung
5. Competitive price, fast delivery time, excellent service

Quality control
Quality control is the basic but most important point for qualification of the steel pipes/tubes & fittings.
We carry out in-production supervision and after-production inspection for our products.
We ensure that the products are produced, tested and inspected strictly according to standard specification under supervision of our QA engineer during production.
After production inspection is carried out by worldwide famous third party inspection company like BV, SGS, Intertek