Pressure vessels are critical in oil and gas, chemical, power, and pharmaceutical industries, containing gases or liquids at non-ambient pressures. Their fabrication requires strict standards to ensure safety, integrity, and compliance with international codes like ASME BPVC Section VIII and China’s GB/T 150.4—2024. This article summarizes core standards covering key fabrication stages.1. General PrinciplesFabrication must prioritize safety, quality, and traceability, with a comprehensive quality management system (QMS) overseeing all activities. Facilities need qualified equipment, and personnel (welders, NDT technicians) must hold valid certifications to ensure competence.2. Material ControlRaw materials (plates, forgings, welding materials) must meet design specs, with selection based on service conditions. A full traceability system tracks materials from procurement to assembly, including mill test reports (MTR). Raw materials undergo strict inspection for surface defects, d...

Tank fabrication involves multiple complex processes, and improper operation or inadequate control in any link may lead to quality defects. Understanding common defects and corresponding avoidance measures is crucial to ensuring the safety, durability and performance of tanks. The following summarizes the most common defects in tank fabrication and practical prevention methods.1. Material DefectsDefect Performance: Common material defects include surface rust, cracks, scratches, uneven thickness, and unqualified mechanical properties. In some cases, the material specification may not match the design requirements, which directly affects the structural strength of the tank.Avoidance Measures: Strictly select steel materials that comply with national and industrial standards (such as AWS D1.1, GB 50205-2020) and design drawings. All materials must be accompanied by complete quality certificates, including material composition, mechanical properties and inspection reports, with traceabl...

Tank fabrication involves high-risk operations such as cutting, welding, and heavy lifting, which require strict safety management and standardized operations to prevent safety accidents, protect personnel safety and equipment integrity. The following are key safety precautions covering all links of tank fabrication.1. Personal Safety ProtectionAll personnel involved in tank fabrication must wear appropriate personal protective equipment (PPE) in accordance with operational requirements. Welders must wear flame-retardant overalls, welding gloves, protective goggles, and face masks to prevent burns, electric shocks, and eye injuries from welding sparks. Operators engaged in cutting, grinding, or derusting work should wear dust masks, safety glasses, and anti-cut gloves to avoid inhalation of dust and injury from debris. Personnel working at heights must wear safety belts and use stable scaffolding or aerial work platforms to prevent falls.2. Workshop Safety ManagementThe fabrication wo...