What standards and steel grades govern your seamless line and pressure pipes?

Sino East manufactures and stocks seamless steel pipes in accordance with ASTM A106 Grade B/C (high-temperature service), ASTM A53 Grade B, API 5L Grade B to X70 (PSL1 and PSL2), and DIN 17175 / EN 10216-2 P235GH/P265GH. Outer diameters range from 1/2 inch (21.3mm) to 28 inches (711mm) across schedules SCH 20, SCH 40, SCH 80, SCH 160, XS, and XXS.

Can you supply seamless pipes for sour service (H2S) per NACE MR0175?

Yes. For oil, gas, and refinery projects containing hydrogen sulfide (H2S), we manufacture sour-service seamless pipes meeting NACE MR0175 / ISO 15156. Material features ultra-low sulphur (S <= 0.002%), calcium treatment for sulphide shape control, strict hardness limitation (<= 22 HRC / 250 HV10), and HIC/SSCC corrosion resistance testing.

What external and internal anti-corrosion coatings are available?

We provide plant-applied external 3-layer Polyethylene (3PE / 3PP) per DIN 30670 / ISO 21809-1, Fusion Bonded Epoxy (FBE per AWWA C213), liquid epoxy lining (per AWWA C210 for potable water and hydrocarbons), black varnish, and hot-dip galvanizing, all 100% holiday tested before shipment.

What testing and inspection procedures are performed on seamless pipes?

Every seamless pipe undergoes 100% hydrostatic testing (up to 50 MPa) and non-destructive eddy-current or full-body ultrasonic testing (UT). Mechanical testing includes tensile, yield, flattening, flaring, and hardness tests, backed by an EN 10204 3.1 MTC and third-party witnessing (SGS/BV/TUV) upon request.

Seamless Steel Pipe

Name: Seamless Steel Pipe — Sino East Steel
Brand: Sino East Steel
SKU: SES-2C2563E4
Availability: InStock

Seamless steel pipe for pressure and structural service — ASTM A106/A53, API 5L, EN 10210, hydrostatically tested with heat-traceable MTCs.

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