Stainless Steel Pipe Fittings

Stainless Steel Buttweld Fittings are defined as a part used in a piping system, for changing direction, branching or for change of pipe diameter, and which is mechanically joined to the system. Buttweld fittings is a butt-welded connected stainless steel pipe fittings, it is easy for installation and maintenance. In fact, we are not only do stainelss steel fittings, as well as alloy steel and special alloys, such as ASTM A234 WP5, WP11, WP12, WP91 etc, and nickel alloy C276, alloy 625, monel 400 etc.

We mainly manufacture and supply stainless steel buttweld fittings according to ASME B16.9, EN10253-4/-3 , including stainless steel elbow, equal/reducing tee, conc/ecc reducer, stainless steel cap, stainless steel stub end etc. We also manufacture and supply stainless steel butt weld fittings to ISO 05251, GOST 17380/17378/17375/17376/17379, JIS etc.

What Materials We Do*:

• Stainless Steel

  ASTM A403 304/L, 304H 310S, 310H 316/L, 316Ti, 316H 317/L 321/H 347/H S31803 S32750 904L 254SMO (S31254)

• Duplex & Super Duplex

  ASTM A815 UNS S31803, S32205, UNS S32750, S32760

• Nickel-base Alloy

  Alloy 200, Monel 400, K500, Inconel 600, 625, Incoloy 800, 800H, 800HT, 825, alloy 20, alloy28, hastelloy C22, C276 etc.

• Copper-Nickle Alloy

  Cu70Ni30(C71500, B30), Cu90Ni10(C70600,B10)

• Titanium Alloy

  Gr. 1, Gr.2, Gr.11 etc.

• Carbon Steel

  ASTM A234 WPB, WPC

• Low Temperature Steel

  ASTM A420 WPL3, WPL6

• Alloy Steel

  ASTM A234 WP5, WP9, WP11, WP12, WP22, WP91,WP911,WPR

• High Yield Steel

  ASTM A860 WPHY42, 46, 50, 52, 56, 60, 65, 70

*The listed materials are for reference only, some materials will upon the quantity because we may have no raw material in stock. We are strength to supply stainless steel 304 weld fittings, 316 fittings, duplex S31803 fittings etc.

**DIN/EN equivalent grade is available, but sometimes we will use ASTM/ASME material to replace if the quantity is not considerable or the material is difficult to get. We will mark it in the offer.

• Size: 1/2” to 104” for welded and seamless

• SCH5S, SCH10S, SCH40S, STD, SCH80S/XS, SCH100, SCH120, SCH160, SCHXXS

• Connection End: Butt-welded.

Product

Size*

Wall Thickness**

Seamless

Welded

Elbow

1/2″-24″

SCH10S~XXS

√

√

8″-104″

SCH5S~80S/XS

√

Tee

1/2″-24″

SCH10S~XXS

√

√

8″-104″

SCH5S~80S/XS

√

Reducer

1/2″-24″

SCH10S~XXS

√

√

8″-104″

SCH5S~80S/XS

√

Cap

1/2″-80″

SCH10S~SCH160

√

Lap Joint Stub End

1/2″-24″

SCH5S~80S/XS

√

√

8″-80″

SCH5S~80S/XS

√

Note:

* Dimension range is not available for some special grade such C276 – 16″ x SCH160. Please make a specific inquiry for these materials.

**Wall thickness range is not available for duplex stainless steel and some special grade, please make a specific enquiry

Angularity Tolerance of  Buttweld Fittings ASME B16.9

Nominal Size		DN			15-100		125-200			250-300		350-400		450-600		650-750			800-1050			1100-1200		1300-1500
		NPS			1/2 – 4		5-8			10-12		14-16		18-24		26-30			32-42			44-48		52-60
Angularity Tolerance	Off Angle	Q			1		2			3		3		4		5			5			5		6.4
	Off Plain	P			2		4			5		6		10		10			13			19		20

*For more information of buttweld fittings, please feel free to contact us.