American customer continues to buy CONCENTRIC REDUCER SEAMLESS 8″ x 4″ / THK 0.325″ X 0.375″ HEIGHT 6″ ASTM A234 WPB ASEM B16.9 from ZIZI ENGINEERING.
A concentric reducer is used to join pipe sections or tube sections on the same axis. The concentric reducer is cone-shaped, and is used when there is a shift in diameter between pipes.
Inpection of 8″ X 4″ Concentric Pipe Reducer
The concentric pipe reducer is produced according to ASME B16.9 Standard, it covers overall dimensions, tolerances, ratings, testing, and markings for factory-made wrought buttwelding fittings in sizes NPS 1 ∕ 2 through NPS 48 (DN 15 through DN 1200). It covers fittings of any producible wall thickness.
Concentric Reducer 8″ x 4″ / Thk 0.325″ X 0.375″ Height 6″ in millimetre size is OD219.1 x 114.3 / T 8.25 x 9.5mm – H152.4mm. The tolerance is stated in ASME B16.9 as following
OD 219.1 +2.4mm / -1.6mm
OD 114.3 +1.6mm
T 8.25 x 9.5mm ( ± 12.5%)
H 152.4 + 2mm
The actual size is 220.1 x 114.5mm / 8.33mm x 9.72mm- H 153.2mm after our inspection. They are toally in tolerance.
How to Pack Carbon Steel Concentric Reducer
We do blasting and painting for carbon steel ASTM A234 WPB concentric reducer fittings against rust during the shipment. After the primer is dried, wrapping the plstick film on the body of reducing fittings. Finally line them into wooden case accordingly.
ASTM A234 WPB Datasheet
Chemical Composition % max
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | Cu | V |
| WPB | 0.3 | 0.1min | 0.29-1.06 | 0.05 | 0.058 | 0.4 | 0.15 | 0.15 | 0.4 | 0.08 |
Mechnical Properties
| Grade | T.S Mpa min | Y.S Mpa min | EL. % min | HB max |
| WPB | 415-655 | 240 | 22 | 197 |
Addtional Service
- Checking Sea Freight or Air Freight.
- Marking Weight and Dimensions.
- Providing Datasheet Drawing.
- Sending Sample Certificate.
- Marking OEM
