SP-18 · AJS ENGINEERING REFERENCE
KS/JIS carbon steel butt-weld fittings selection guide
Carbon steel butt-weld fittings (elbows, tees, reducers and caps) manufactured to KS B 1543 and JIS B 2311, B 2312 and B 2313.
Product function
Carbon steel butt-weld fittings (elbows, tees, reducers and caps) manufactured to KS B 1543 and JIS B 2311, B 2312 and B 2313.
Selection criteria
Materials: SPP, SGP, STPG370, STPT370 and SPPS250.
Sizes DN15 to DN1200; wall thickness follows the schedules of the applicable KS/JIS standard. Tables are grouped by SPP/SGP, 7.9T, STD, XS and Sch.40 to 160.
Approvals stated in the specification sheet: KS, JIS, KR type approval, DNV and ISO. Confirm the valid scope for each item from the relevant certificate.
Information for quotation
Provide the shape (long/short radius elbow, tee, concentric/eccentric reducer, cap), nominal size, wall thickness (schedule), material and quantity.
Specify the dimensional standard (KS/JIS or ASME). The same nominal size can have different outside diameters and dimensions under each standard.
State any material documentation (for example mill test reports) required at the time of the quotation request.
Continue to the product & specification
Butt-weld fittings ↗Downloads 1
Edited AJS review briefs and reviewed public documents. Check the source and scope of each file. Check covered models, issue dates and validity before using certificates, test reports or installation instructions.
- KS/JIS carbon steel butt-weld fittings selection guideHTML · 4 KB · AJS bilingual review brief
Source, revision & language
Retrieved: 2026-10-27 · Document revision: see original
AJS · Review guide ↗
This edited purchasing and design review brief includes Korean and English.