Flanges provided by JEFA Machinery are field proven flanges which strictly designed and manufactured according to API 6A and API Spec Q1 forged or casted.

DSA’s are a combination of flanges of different sizes and pressure ratings.
DSA is normally supplied along with appropriate size of studs with nuts duly fitted.
Adapter Flanges are used for transition in nominal size and/or pressure rating and where there is a restriction of space in the drill string.
They provide an ideal solution by hooking up two different equipments of different size and pressure rating. DSAF’s are available as per customer specified thicknesses, consistent with design considerations.

Basic material of construction is alloy steel. For corrosion resistance, overlays like SS
316L or Inconel 625 can be incorporated to improve product life if required.

Product range
Size : As per customer requirement
Pressure Class : 2000 PSI to 15000 PSI
Material of Construction : As per API 16A
Service Condition : General, Sour Services

API 6A Double Studded Wellhead Adapter Flange    Product picture

JEFA Supply follow API6A standard products with competitve price with superior quality and service

1 Wellhead and X-mas tree,Casing head/tubing head/tubing spool/Frac head/Studded Cross&tee/ Weco adapters/Flanges/Drilling spools/BHTA etc

2 FC gate valves/WKM expanding valves/Demco mud valves/BSO gate valves/Hydraulic gate valve/ plug valves/H2 Chokes

3 Valve parts: Gate,Seat,Stem,Body bushing,seat seals,stem packing ,ring gasket etc (interchangeable)

 1 How long can i get products?

 A  1 week for stock products

 B  6 ~7 weeks if no stock

2 Which trading terms do you offer?

We can do Ex-work, Fob Shanghai ,CIF or Door to Door 

3 What is your MOQ?

We welcome trial order ,1 pc is acceptable for JEFA.  

4  Where is your factory?

JEFA's forging factory located in Huai'an Jiangsu 

JEFA'S machining and heat-treatment factory located in Jianhu.Jiangsu

JEFA's Assembly factory located in  Jianhu.Jiangsu

It takes 4 hours drive from Shanghai to factory.