ASTM A234 WP11
ASTM A234 Standard
ASTM A234 is a material specification of butt-welding pipe fittings, and WP11 is a steel grade in this standard. The ASTM A234 WP11 Fittings are used for pressure piping in moderate and high temperature services. The A234 WP11 Material has elements like carbon, марганец, фосфор, Сера, и т. д., in its chemical composition, we provide the wide variety steel pipe fittings like end pipe cap, тройник, редуктор, stub-ends, локоть, cross and alloy steel.
It comes in different dimensions such as MSS-SP-43, ASME B16.28 as well as ANSI or ASME. Sizes of these pipe fittings are also available in different ranges 1/8 NB to 48 Нб (fabricated, seamless and 100 percent x-ray). Изготовленный, seamless as well as welded are the types of these pipe fittings. Its bending radius is such as 1D, 3Д, 4Д, 2Д, 5D and customized according to customer’s needs. When it comes to the product wall thickness, then it is totally customized. Although, you can buy it in the readymade form in different thickness, but if you are in need of extra thickness you can extend.

Key Elements – Chromium and Moly
АСТМ А234 WP11 (ASME SA234 WP11) is Chrome Moly Pipe Fittings standard specification for high temperature services. WP11 Pipe Fittings Chrome content at 1.00% к 1.50%, Moly content 0.44% к 0.65%, Minimum tensile strength 415MPa, minimum yield strength 205Mpa. It covers the butt-welded pipe fittings of Elbow, тройник, Редуктор, Cap and Cross, and some socket welding, threaded pipe fittings, raw material from ASTM A335 P11. ASTM A234 WP11
Chromium is a key component that is used in the manufacture of stainless steel. If the chromium levels are above 12%, it can be classified as stainless steel. The oxidation resistance potential of chrome is irreplaceable even in elevated temperatures. The hardness, tensile and yield strength is better at standard temperatures. Due to the composition of the material, it is ideal to be used in power plants, нефтеперерабатывающие заводы, petro-chemical plants and other oil field services when there is transportation under high temperatures and pressures involved.
Moly ensures that the material is more resistant to softening, restrains the growth of grains and lessens the chances of embrittlement. It is the single additive that is responsible for the increase in high temperature resistance (to 540-750°C) and it also improves the corrosion resistance to steel.

Manufacturing Methods For SA 234 WP11 Material
The ASTM A234 Gr WP11 Pipe Fittings are manufactured through the wrought process, which means the fittings are cast or forged. Most of the fittings made of WP11 Material are manufactured from plates, but the larger ones are commonly manufactured in pieces and welded together. ASTM A234 WP11
- The A234 WP11 Fittings Manufacturing Methods (manufacturing is called “wrought”) which means it is forged and casted.
- Usually, caps are made from plate and tee, редуктор, elbow are made from steel pipe.
- But the large sizes and large diameter fittings are Usually manufactured in welded or pieces together.
Corresponding Material
Seamless Pipe Standard: ASTM A335 P11 / ASME SA335 P11
Фланец Стандартный: ASTM A182 F11
Steel Plate Standard: ASTM A387 Grade 11/ ASME SA387 Grade 11
Welded pipe standard: ASTM A691 1-1/4 CR
Materials and Manufacturing
The raw material for making ASTM A234 WP11 fittings hall be fully killed, consisting of forgings, бары, тарелки, лист, and seamless or fusion-welded pipe products with filler metal added and shall conform to the chemical requirements of Table. Unless specified for carbon steel plates or sheet, the steel may be made to either coarse grain or fine grain practice. Which ASTM A234 WP9 shall be made to fine grain practice.
Forgings or forming operations could be perfomred by hammering, прессование, пирсинг, upseting, прокатывание, вытягивание, изгиб, сварка слияния, обработка, or by a combination of two or more above operations. Which the point of manufacturing is not to produce injurious imperfections in the fittings.
How To Use The A234 WP11 Fittings?
ASTM A234 WP11 pipe fittings are butt weldingends, commonly used to be welded with theASTM A335 P11 pipe.SA234 WP11 is lowcontent alloy steel,the hardness is higher thanthe carbon steel material,it have a goodstrength in the piping system,it is leak proofand strong.

A234 WP11 Alloy Steel Fitttings Applications
- Food Processing
- Pharmaceuticals Industry
- Pharmaceuticals Application
- Energy Industry
- Power Plant
- Переработка газа
- Нефтехимическая промышленность
- Chemical Industry
- Oil and Gas Industry
A234 WP11 Chemical Composition
| АСТМ А234 WP11 | CL1 | КЛ 2 | CL3 |
|---|---|---|---|
| Фоспор | 0.03 | 0.04 | 0.04 |
| Углерод | 0.05–0,15 | 0.05–0.20 | 0.05–0.20 |
| Никель | – | – | – |
| сера | 0.03 | 0.04 | 0.04 |
| Молибден | 0.44–0.65 | 0.44–0.65 | 0.44–0.65 |
| Медь | – | – | – |
| Кремний | 0.50–1.00 | 0.50–1.00 | 0.50–1.00 |
| Хром | 1.00–1.50 | 1.00–1.50 | 1.00–1.50 |
| Марганец | 0.30–0.60 | 0.30–0.80 | 0.30–0.80 |
A234 WP11 Material Yield Requirements
| Требования | ASTM A234 Grade WP11 Class 1 | ASTM A234 WP11 CL2 | A234 WP11 CL3 |
|---|---|---|---|
| Урожай,сила, minimum MPa (KSI) (0.2% смещение или 0.5% Расширение недостатки) | 205 (30) | 275 (40) | 310 (45) |
Elongation of A234 WP11 fittings
| Требования | АСТМ А234 WP11 | |
|---|---|---|
| – | Продольный | Поперечный |
| Small proportional specimen or standard round specimen, minimum percentage in 4D | 22 | 14 |
| Rectangular speicmen for thickness 5/16 дюйм. and thicker, as well as for all sizes tested in full section; minimum percentage in 2 дюймы | 30 | 20 А |
| Rectangular speicimen for thickness less than 5/16 дюймы; минимум % в 2 в (1/2 inches wide specimen) | Беременный | Беременный |
We are a professional pipe fittings & flange manufacturer in China.As a experienced A234 WP11 Pipe Fittings manufactuer in China. We can produce high quality steel фитинги для труб, Astm A234 wp11 Pipe fitting,Локоть,тройник,Редукторы. Связаться с нами now for a quote on China A234 WP11 Pipe fittings.
С&Н Индустриальная Группа, трубка, производители фитингов и фланцев,Эпоксидное и полиэтиленовое покрытие fbe для трубопроводов с 1991 года, марка C.&Н Хуйтун ,С&Н Хунчэн.















