NACE MR0175
14 in-depth engineering guides on NACE MR0175 — specification, selection, testing and procurement.
Everything on NACE MR0175
Vajra's engineering team has published 14 technical guides covering NACE MR0175 for industrial valve selection, specification, testing and procurement. Browse the full set below.
Amine Gas Treating Valves: Selection for Sweetening and Acid-Gas Removal
Amine gas-treating units remove hydrogen sulphide and carbon dioxide from natural gas and refinery streams. The circulating amine, the acid gas, and the regenerator conditions create a demanding mix of corrosion and erosion. This guide covers valve selection across the amine loop, materials, and specification.
Valve Supplier Saudi Arabia - Saudi Aramco, SABIC, SATORP & Downstream Projects
Saudi Arabia is the world's largest oil exporter and one of the most demanding valve markets. Saudi Aramco's SAMSS specifications, SABIC downstream petrochemical projects, and the growing downstream complex at Jubail and Yanbu set rigorous technical and quality requirements that valve suppliers must meet.
Valves for Seawater and Offshore Service: Material Selection Guide
Seawater is one of the most corrosive natural fluids encountered in industry - high chloride concentration, dissolved oxygen, biofouling, and galvanic potential create an extremely aggressive environment that disqualifies carbon steel and standard 316 stainless from use without coating. This guide covers correct material selection, valve types, and standards for seawater and offshore service.
Industrial Valve Supplier Kazakhstan - Tengiz, Kashagan & Atyrau | API 6D, NACE
Kazakhstan's Tengiz and Kashagan fields are among the world's largest and most technically demanding. This guide covers the valve specifications, certifications, and materials required for Kazakh oil and gas procurement.
Valve Documentation Requirements for Oil & Gas - MTCs, Test Certs, TPI & Traceability
Oil and gas valve procurement requires a specific documentation package. This guide explains every document - what it certifies, which standard it references, and when it's required.
Valve Selection for Seawater Cooling Service - Materials, Corrosion & Standards
Seawater is one of the most corrosive fluids in process engineering. SS 316 fails within months - here is what to specify instead.
Valve Selection for Hydrogen Service - API 6D, NACE, HIC Testing & Materials
Hydrogen service imposes unique material, sealing, and fire-safety demands on industrial valves. This guide covers hydrogen embrittlement, HIC testing, ASME B31.12 requirements, valve type selection, and body seal design for both conventional refinery hydrogen service and emerging green hydrogen applications.
Valves for H₂S Sour Service - NACE MR0175/ISO 15156 Material Requirements
H₂S (hydrogen sulphide) is present in sour crude oil and natural gas streams, and at concentrations above the NACE sour threshold it causes rapid materials failures - sulfide stress cracking (SSC) and hydrogen-induced cracking (HIC). This guide explains NACE MR0175/ISO 15156 material requirements for valves in sour service.
Industrial Valve Supplier Saudi Arabia: API 6D, Aramco-Approved, EPC Grade
Saudi Arabia's massive oil & gas, petrochemical, and infrastructure build-out drives enormous demand for API 6D ball valves, gate valves, globe valves, butterfly valves, and strainers. This guide covers Aramco specification requirements, key Saudi valve standards, and how Vajra Industrial Solutions supplies EPC-grade valves to Riyadh, Jubail, Yanbu, and Jeddah projects.
Valve Selection for Oil & Gas Upstream Operations
Upstream oil and gas operations demand the highest valve reliability - wellhead blowouts and pipeline failures are catastrophic. This guide covers Christmas tree configurations, NACE sour service requirements, fire-safe testing, and the API 6D compliance framework for upstream valve procurement.
NACE MR0175 Sour Service: H₂S, Hardness Limits & Material Requirements
NACE MR0175 / ISO 15156 is the mandatory standard for all metallic components in oilfield production environments containing H₂S. Non-compliance leads to sudden brittle fracture - Sulphide Stress Cracking (SSC) or Hydrogen-Induced Cracking (HIC). This guide explains H₂S thresholds, hardness limits, CRA selection, and NACE-compliant valve specification.
NACE MR0175 / ISO 15156 Valves for Sour Service: H2S and SSC Guide
Hydrogen sulphide (H2S) in wet sour gas and crude oil environments causes sulphide stress cracking (SSC) - a sudden, brittle fracture mode that has catastrophically failed standard carbon and alloy steel valves. NACE MR0175 / ISO 15156 defines the material requirements to prevent SSC in sour oil and gas service.
How to Specify Industrial Valves for Chemical Service: A Complete Guide
Chemical plants handle some of the most aggressive fluids in any industry - strong acids, chlorinated solvents, caustic solutions, oxidising agents, and toxic gases. Specifying the wrong valve body material, seat, or seal material can lead to catastrophic corrosion, product contamination, or unsafe failure. This guide covers every variable in chemical valve specification.
Industrial Valve Materials Guide: Carbon Steel, Stainless Steel, Alloy Steel and Exotic Alloys
Selecting the right valve material is critical to safety, longevity, and total cost of ownership. This guide covers all common valve body and trim materials - from carbon steel WCB to exotic Hastelloy and Inconel - with applications, temperature limits, and ASTM designations.
Related topics
Need valves engineered for NACE MR0175?
Our engineering team writes these guides and supplies the valves. Send your requirement for a specification review and a 24-hour quote.