Questions about SSC, HIC, and SOHIC tests
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SY/T 0599-2018 \"Technical Specifications for Metal Materials Resistant to Sulfide Stress Cracking and Stress Corrosion Cracking in Natural Gas Surface Facilities\"; GB/T 20972.2-2008 \"Materials for Use in Hydrocarbon Extraction in the Oil and Gas Industry in Hydrogen Sulfide-Containing Environments – Part 2: Crack-Resistant Carbon Steels, Low-Alloy Steels, and Cast Irons\". 1. If materials specified in these standards are used, and the manufacturing processes of the material manufacturers have been evaluated for SSC resistance, is it still necessary to conduct SSC tests on each batch of materials? 2. If materials specified in these standards are used, and the manufacturing process of the equipment manufacturer has already been evaluated by SSC, is it still necessary to conduct an SSC test on each piece of equipment? 3. The questions regarding the HIC test and SOHIC test are the same as those for the previous two items.
First of all, these days many people buy dual-resistant materials. What does that mean? That means the materials come with SSC test reports and HIC test reports already attached upon leaving the factory; tests are conducted separately for different materials and furnace numbers. But after you purchase the materials and use them to manufacture the equipment, welding will be required; at that time, your company will need to send the welded parts to a third party, and then we can conduct this test for item 1802119329. By the way… The HIC test and SSC test are commonly encountered, but the SOHIC test can be omitted if it isn’t proposed; even if it is proposed, the outcome remains the same.