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Home – Steel Pipe Fittings – Stub End – material-selector Stub End Material Grade Selector — Synbase Steel E‑CHENG 5-Point Material Compatibility Guide Select your service conditions to get the recommended stub end material grade with ASTM specification. Service Temperature: Ambient (−20°C to 120°C) Elevated (120°C to 450°C) High-temp (450°C to 700°C) Cryogenic (below −46°C) Process Fluid: Water / steam / air Hydrocarbon (oil, gas, LNG) Chloride-bearing fluid Acid / chemical H₂S / sour service (NACE) Pharmaceutical / food-grade Pressure Class (ASME 150–2500): Class 150–300 (low) Class 600–900 (medium) Class 1500–2500 (high) External corrosion exposure: Indoor / dry environment Marine / coastal / humid Buried / underground Get Material Recommendation →