Industry Overview
Petrochemical castings operate in environments that would destroy ordinary metal components within months: H2S-laden sour gas at 400°C, chloride-containing process streams, and cyclic pressure loads that never stop. Material selection is not a preference — it is an engineering decision that determines whether a valve body lasts 6 months or 20 years. PrimeCast Global specializes in the alloys that petrochemical engineers specify for these conditions: duplex 2205, super duplex 2507, Alloy 20, Hastelloy C-276, and Inconel 625. Every casting is produced with full material heat number traceability, and pressure-containing components are hydrostatically tested to 1.5x working pressure as standard. Our engineering team reviews every petrochemical drawing for wall thickness adequacy, nozzle reinforcement, and heat treatment requirements before production.
Common Industry Challenges
- →Sour service (H2S) requires NACE MR0175-compliant materials and heat treatment
- →High-temperature oxidizing and sulfidizing environments degrade standard stainless steels
- →Pressure-containing components require zero porosity — hydrostatic testing mandatory
- →Chloride stress corrosion cracking risk in austenitic stainless steels — duplex alloys required
- →API 6A, API 600, and ASME B16.34 dimensional and quality standards compliance
Our Solutions
- Investment casting in duplex 2205, super duplex 2507, Alloy 20, Hastelloy C-276, Inconel 625
- Hydrostatic pressure testing to 1.5x working pressure as standard on all pressure-containing parts
- Full NDT: radiographic (X-ray), ultrasonic, magnetic particle, and liquid penetrant inspection
- NACE MR0175-compliant material selection and solution annealing heat treatment
- Full material heat number traceability and mill certification on every shipment
Typical Applications
Representative components we manufacture for this industry.
Casting Precision & Tolerance Standards for Petrochemical
For Petrochemical applications, we manufacture to international standards with the following precision capabilities.
* Tolerances based on ISO 8062 / GB/T 6414 standards. Actual values depend on part geometry, material, and process parameters.