ASME / ANSI B16.9 Concentric & Eccentric Reducer Specification :

Standards : ASME / ANSI - B 16.9, ASTM A403 - ASME SA403, ASME B16.9, ASME B16.25, ASME B16.28, MSS SP-43.

Size : Seamless Reducer ( 1/2″～24″), ERW / Welded / Fabricated Reducer (1/2″～48″)

Thickness : Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc.

Type : Seamless / ERW / Welded / Fabricated

Form : Concentric Reducers, Eccentric Reducers

ASME / ANSI B16.9 Concentric & Eccentric Reducer Material & Grades :

Stainless Steel Concentric & Eccentric Reducer :

ASTM A403 WP316/316L, ASTM A403 SA / A 774 WP-S, WP-W, WP-WX 304/304L, ASTM A182 F316L, 304L, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404

Duplex & Super Duplex Steel Concentric & Eccentric Reducer :

ASTM A 815, ASME SA 815 UNS NO S31803, S32205. UNS S32750, S32950. Werkstoff No. 1.4462

Carbon Steel Concentric & Eccentric Reducer :

ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.

Alloy Steel Concentric & Eccentric Reducer :

ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91

Concentric Reducer

A concentric reducer is a cone-shaped mechanical fitting that joins two pipes or tubes of different diameters on the same axis.It allows for connecting a large pipe to a smaller pipe by means of welding. A concentric reducer allows welded connection between two pipes with the same center line.

Special Features

Horizontal liquid reducers are usually eccentric, with a flat top that avoids the accumulation of air bubbles in the system. Eccentric reducers are used on the suction side of pumps to stop air trapping in the tubing. The gradual accumulation of air in a concentric reducer can result in a large bubble, causing the pump to stall or cavitation when drawn into the pump. Horizontal gas reducers are often eccentric with smooth bottoms, allowing condensed water or oil to drain at low stages.

Standard: ANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M---1996, DIN2605 / 2615 / 2616, JIS P2311/2312

Surface treatment: Transparent oil, rust-proof black oil or hot galvanized.

• Based on different materials, pipe reducers include carbon steel reducer, stainless steel reducer, and alloy steel reducer etc.
• Depending on their construction, pipe reducers contain threaded reducer, tapered reducer and anti-roll reducer etc.