Product Details
Lap Joint Flange With Stub End
Stub End is a short pipe with a flared outwards end at one end. The
other end is prepared to be welded with pipes. It usually used with
lap joint flange or other rotating back flanges. The flared end is
sandwiched in the two flanges as gasket. Rotating back flanges can
be lap joint flange or slip on flange. This combination can replace
a welding flange and the flange can be replaced.
Zizi is China leading manufacturer and exporter of steel pipe
fittings and flanges, we offer buttweld fittings, socket weld
fittings, threaded fittings and forged flanges in best price.
Lap Joint Stub End Dimensions
Supply Range
Standard | ASME B16.9, MSS SP-43 |
Diameter | NPS 1/2” to 24”, DN15 to DN600 |
Thickness | Sch 10S, 40S, 80S |
Alloy Steel | ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22, WP91 |
Stainless Steel | ASTM A403 WP304/304L/304H, WP316/316L, WP 309, WP310, WP317, WP321,
WP347 |
Carbon Steel | ASTM A234 WPB, A860 WPHY42, WHPY52, WPHY60, WHPY65, WPHY70, A420
WPL 3 / 6 / 9. |
Duplex Steel | ASTM A815 UNS S 31803, 32205, 32550, 32750, 32760 |
Copper & Nickel Alloy | NICKEL 200,NICKEL 201, MONEL 400, INCONEL825, INCONEL 600, INCONEL
601, INCONEL 625, HASTELLOY C276, C70600, C71500 |
Advantages of Alloy Steel Stub End
- Rust proof finish
- Zero breakage during operations
- Resistant high temperature
- Ensure tight joints
- Chemically insert
- Accurate size
- Continuous and smooth flow
- Low friction loss
- Smooth inner surface
- Convenience for the pipeline maintain and disassemble
ASTM A234 WP91 Properties
Chemical Composition
C | Mn | P | S | Si | Cr | Mo | Ni |
0.08-0.12 | 0.3-0.6 | 0.02 | 0.01 | 0.2-0.5 | 8-9.5 | 0.85-1.05 | 0.4 |
Mechanical Properties
Tensile Strength | Yield Strength | Elongation |
585-760 | 415 | 20 |
ASME B16.9 Stub End Types
Short Pattern Stub End
Also know as MSS-A stub end, it means the length of stub end is
relatively short.
Long Pattern Stub End
ASA-A stub end or ANSI length stub end, its length is longer than
short pattern.
Type A stub end
Used with lap joint flanges
Type B stub end
Used with slip on flanges.
Buttweld Fittings Manufacturer
As leading manufacturer of lap joint stub end, we offer each
clinets attentive service as follow
Fast Delivery
One Step Service
Competitive Prices
ISO Certificated Product
Quick Response
Company Profile
Zizi Engineering Co., Ltd is a leading industrial pipe fittings and flanges supplier for
construction, petrochemical and oilfield customers.
We engaged in the manufacture and export of industrial pipe
fittings for 9 years, our products have been sold to 37 countries
around the world. We have a modern and professional manufacturing
plant, established two warehouses near the harbor one after
another. They are the base for our ability to offer high quality
products and fast delivery.
Our products mainly are butt weld fittings, forged pipe fitings and
forged steel flanges in stainless steel, carbon steel and alloy
steel. They are produced according to ASME/ANSI American standards,
DIN Germany Standards, JIS Japanese standards or as customer
required. Those products are widely used in petrochemical industry,
shipbuilding, oil field in ocean, electric power or city building.
Since we are founded, we are concentrated to be a professional
global manufacture company with best products and service.
Eventually we get some achievements after years of harding working
and presistence.
We will always insists on the managing objective of " quality
first, service supreme, reasonable price". On the basis of
continuously perfection the current products, our company
persistently innovates upon the productive technology, provides
vast customers with all kinds of superior new goods. We are willing
to sincerely cooperate with friends from all walks of life to
create a better future.