Sep 15, 2026Grades & Materials
Large Diameter DN Steel Pipe: DN219, DN808 and DN1400 Selection Guide
Selection guide for large diameter DN steel pipe: what DN219, DN808 and DN1400 are, their stated properties and typical industrial applications.
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Sep 15, 2026Grades & Materials
Stainless and Alloy Steel Grades for Project Supply: 304, 316L, 347, 310L, S31254 and More
Grade reference for stainless and alloy pipe: 304, 06Cr19Ni10, 316L, 310L, 347, S31254, 10050, 20060, 09CrCuSb, SA106C, 12Cr1MoVR, 35CrNi3MoV, 20Mn2.
Sep 15, 2026Grades & Materials
Q Series and X Series Welded Steel Pipe Grades: Properties, Production and Applications
Grade reference for Q and X series welded pipe: Q370QE, Q420C, Q420D, Q420QC, Q550QD, Q690D, QSTE550TM, X42, X52M, X52Q, X56Q, X60M, X70 and X90Q.
Sep 13, 2026Applications & Projects
Why Exhaust Gas Treatment Systems Use Spiral Steel Pipe
Exhaust gas treatment systems use spiral steel pipe for ventilation ducts because the circular, machine-formed body gives better airtightness, lower p
Sep 13, 2026Standards & Testing
ASTM A335 P91 Alloy Steel Pipe: Performance, Application and Production
ASTM A335 P91 is a 9% Cr-1% Mo martensitic heat-resistant alloy pipe for high-temperature service: key properties, sizes and production.
Sep 13, 2026Applications & Projects
Fire Protection for Steel Structures: Pipe and Coating Options
Why unprotected steel fails in a fire, and the main protection options: cladding, water-filled members, shielding and fire-resistive coatings.
Sep 13, 2026Standards & Testing
Steel Pipe Buying FAQ: Standards, Grades, Sizes and Supply
Buyer FAQ on SPAI STEEL pipe supply: standards, grades, sizes, ordering data, quality documents, payment and delivery terms.
Sep 13, 2026Applications & Projects
Steel Pipe and Flange: How They Work Together
How steel pipe and flange connections work, when threaded or welded flanges suit the line, and what to specify when ordering.
Sep 13, 2026Applications & Projects
Stainless Steel Tube: Practical Knowledge for Buyers
Stainless steel tube classified by production method, section shape, pipe end and application, with the size ranges buyers should confirm.
Sep 13, 2026Applications & Projects
Stainless Steel Pipe: Characteristics and Selection Basics
Core characteristics of stainless steel pipe, how corrosion resistance is tested, and selection basics for fluid, welding and polishing needs.
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