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For reliability you can trust, use APCO brand weld fittings.

This excellent product is made of the highest quality seamless pipe and plate and is available in ½-inch to 72-inch sizes. We are also a foremost manufacturer of quality forged steel fittings.


Ask us about available coatings.

Butt-Weld Fittings

Forged Steel Fittings


  • ISO09001-2000 Certification

  • API Q1 Certification

  • GB/T 19001-2000 Certification

  • IQ Net Certification

  • 97/23/EC ANNEX 1, Paragraph 4.3 - Velosi Certification Bureau Limited, API Certification

  • CRN Numbers (Canadian Standard): OA08470.0 (Canada-Wide), LRQA PED Certification

  • DNV - Shipbuilding


  • CSA 245.11 all grades

  • ASTM A234 WPB,WP11,WP22,WP5

  • ASTM A403 WP304,WP304L,WP316, WP316L, WP321, WP321H, WP347, WP347H

  • ASTM A420 WPL6,WPL3

  • ASTM A860 WPHY52, WPHY60, WPHY65, WPHY70

  • ASTM A815 S31803

  • ANSI B16.9, B16.28

  • MssSP 75 in Same Grades as above

  • JIS B2311, B2312, B2313

  • Conforms to NACE MR0175/ISO15156

  • CSA Z245.11

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