Reducing elbow

on
A reducing elbow is a type of fitting which is used to join two pieces of pipe of different sizes. The reducing elbow is so called because it looks like a reducing piece and elbow combined into one.
In long radius elbow, centreline radius is 1.5 times the nominal size of the pipe or you can say 1.5 times the diameter of the pipe.

When the two ends differ in size, the fitting is called a reducing elbow or reducer elbow.

Normally long radius elbows are used in piping as pressure loss is less as compared to short radius elbow. It required more space than short radius elbow.

An elbow is a pipe fitting installed between two lengths of pipe or tubing to allow a change of direction, usually a 180° or 90° angle, though 45° elbows are also made. The ends may be machined for butt welding (SW) or socketed welding(SW) etc.

Types of reducing elbow:
The reducing elbows are available in various types like:

  • 90° reducing elbow
  • 45° reducing elbow
  • 135° reducing elbow
  • 180° reducing elbow etc

Features of reducing elbows:

Some features that are available in reducing elbows are as follows:

  • Usually healthy and non-toxic, free of stain and scale
  • High temperature resistance
  • High pressure resistance
  • Hot welding connection adopted
  • Leakage effectively prevented
  • Excellent heat insulation property
  • Light weight, easy to handle and transport
  • Smooth inner wall which reduces the pressure loss and increases the flow speed
  • Low noise
  • Excellent design, suitable for installation either exposed or hidden
  • Wonderful ability in chemical corrosion resistance
  • Easy and fast installation

Applications of reducing elbow:

Reducing elbows are used in a variety of applications like as follows:

  • Hot and cold water supply facilities for public buildings
  • Chemical, food, electronic industrial pipeline networks like pipeline networks for transporting all kinds of corrosive liquid
  • Pipeline networks for drinking water production system such as pure water and mineral water
  • Pipeline for air conditioning networks
  • Compressed gas pipeline facility for industry
  • Pipeline network for swimming pool
  • Pipeline network for solar energy facility
  • Agriculture production transporting system

Most elbows are available in short radius or long radius variants. When the two ends differ in size, the fitting is called a reducing elbow or reducer elbow.

A324 WP elbow is the manufacturing process of ASTM A234 WPB.

  • W = WELDABLE / wrought
  • P = RELATED TO P NUMBER OF ALLOY MATERIAL
  • B = REFER TO MINIMUM YIELD OF MATERIAL

Chemical Composition (%) of ASTM A234 WP11

GradeCMnPSSiCrMoNiCuVNb
WP11 CL10.05-0.150.30-0.600.030.030.50-1.001.00-1.500.44-0.65----
WP11 CL2/30.05-0.200.30-0.800.040.040.50-1.001.00-1.500.44-0.65----

Notes:

  • For each reduction of 0.01% below the specified C maximum, an increase of 0.06% Mn above the specified maximum will be permitted, up to a maximum of 1.35%.
  • The sum of Cu, Ni, Cr, and Mo shall not exceed 1.00%.
  • The sum of Cr and Mo shall not exceed 0.32%.
  • The maximum carbon equivalent (C.E.) shall be 0.50, based on heat analysis and the formula C.E.=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.

Mechanical properties of ASTM A234

Tensile RequirementsWPBWP11CL1　WP11CL3
Tensile Strength, min, ksi[MPa]60-8560-85　75-100
(0.2% offset or 0.5% extension-under-load)[415-585][415-585]　[520-690]
Yield Strength, min, ksi[MPa]323045
[240][205][310]

Process

Killed steel, with forgings, bars, plates, sheet, and seamless or fusion-welded tubular products with filler metal added. Forging or shaping operations performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations.

Heat Treatment

After forming at an elevated temperature, fittings are cooled to a temperature below the critical range under suitable conditions to prevent injurious defects caused by too rapid cooling, but in no case more rapidly than the cooling rate in still air. Heat treatment temperatures specified are metal (part) temperatures. Heat-treated fittings are to be treated according to paragraph 7 in Specification A960/A960M.

Reference Documents

  • ASTM A216/A216M Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service
  • ASTM A217/A217M Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service
  • ASTM A960/A960M Specification for Common Requirements for Wrought Steel Piping Fittings
  • ASME B16.9 Steel Butt-Welding Fittings
  • ASME B16.11 Forged Steel Fittings, Socket Welding and Threaded

Hot products

Image

ASTM A335 Chrome Moly Pipe

Chrome Moly Pipe has become a standard in the power generation industry and the petrochemical industry, not only because of its tensile strength, corrosion resistance and high-temperature strength, but also because of its cost-effectiveness. Grades P-11, P-22 – P-91 & P-92 are prevalent grades for the power industry, while P-5 & P-9 are the grades utilized in major refinery processing. ASTM A335 P9 alloy steel pipe ASTM A335 P11 alloy steel pipe ASTM A335 P22 alloy steel pipe ASTM A335 P91 alloy steel pipe ASTM A335 P92 alloy pipes ASTM A335 P5 alloy steel pipe Sunny Steel Supply stocks a full range of the following A335 pipe grades: Main grades:  ASTM A335 P5, P9, P11, P-22, and P91 Size range: NPS 1/4'' to NPS 24'' Wall Thickness - Schedules 40 through 160, STD, XS, XXS. Unscheduled heavy wall pipe thicknesses available up
Image

Steel pipe world standards

Pipe manufacturing refers to how the individual pieces of pipe are made in a pipe mill; it does not refer to how the pieces are connected in the field to form a continuous pipeline. Each piece of pipe produced by a pipe mill is called a joint or a length (regardless of its measured length). In some cases, pipe is shipped to the pipeline construction site as “double joints”, where two pieces of pipe are pre-welded together to save time. Most of the pipe used for oil and gas pipelines is seamless or longitudinally welded, although spirally welded pipe is common for larger diameters. 1. Structural Steel Pipe: ASTM A53: GR.A, GR.B ASTM A106: GR.A, Gr.B, Gr.C GB/T 8162: 10#, 20#, 35#,45#, Q345A, Q345B, A345C, Q345D, Q345E, 20Cr, 40Cr, 20Mn2, 45Mn2, 40CrB, 27SiMn, 15CrMo, 20CrMo, 35CrMo, 42CrMo ASTM A519: 1020, 1035, 1045, 4130, 4140 DIN1629: St37.0, St44.0, St55, St52.0 DIN17175: St35.8, 17Mn4, 13CrMo44 EN10297: E355, C45, 34CrMo4 JIS G3441: SCM 420TK, SCM440TK JIS G3445: STKM13A, STKM1
Image

ASTM A333 Grade 6 Seamless Pipe

ASTM A333 Grade 6 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation. Spec. Grade O.D W.T Length pcs Unit QTY ASTM A333 GR.6 88.90 4.00 6000-12000 15 T 1.3350 ASTM A333 GR.6 114.30 6.00 6000-12000 12 T 1.6980 ASTM A333 GR.6 114.00 7.00 6000-12000 3 T 0.5050 ASTM A333 GR.6 114.30 8.00 6000-12000 5 T 1.1050 ASTM A333 GR.6 114.30 12.00 6000-12000 2 T 0.6500 ASTM A333 GR.6 168.30 7.11 6000-12000 8 T 2.3380 ASTM A333 GR.6 168.30 7.11 12000 3 T 1.0320 ASTM A333 GR.6 168.30 7.11 6000-12000 4 T 1.2960 ASTM A333 GR.6 219.10 12.70     T 3.1820 ASTM A333 GR.6 323.80 9.53     T 1.9030 ASTM A333 GR.6 323.80 10.31     T 0.4560 ASTM A333 GR.3 48.30 5.08 6000-12000 22 T 1.3480 ASTM A333 GR.3 60.30 3.91 10300 18 T 1.0420 ASTM A333 GR.3 60.30 5.54 11800 17 T 1.5060 ASTM A333 GR.3 60.30 5.54 10500 4 T 0.3180 ASTM A333 GR.3 88.90 5.49 8600 8 T 0.7920 ASTM A333 GR.3 88.90 5.49 6000-12000 8 T 0.8360 ASTM A333 GR.3 114.30 6.02 6000-120
Image

ASTM A106 Seamless carbon steel tube for high temperature service

ASTM A106 Seamless carbon steel tube for high temperature service Description: standards: ASTM A106 (ASME SA106) products mainly used: apply to bending, curling and similar forming process. the main products of steel / steel grade: Gr.A; Gr.B; Gr.C. Specifications: diameter: 10.3 to 114.3 mm thickness: 0.8 to 12 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe. Chemical composition and mechanical properties JIS Number and Corrensponding Foreign Standards ASTM A106 Gr.B Pipes ASTM A106 / A106M - 11 Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service Tubes for Fluid Our fluid seamless steel tubes are widely used for fluid transport, oil and natural gas long distance transmission as well as fluids. ASTM A106 (ASME SA106) Scope: This specification covers seamless carbon steel pipe for high-temperature service (Note 1) in NPS 1/8 to NPS 48 incl
Image

Orifice Flanges

Orifice flange for run installation should be so constructed, machined and attached to the that the inner surface of the passage extends through the orifice flange so that there is no recess at the orifice plate. Orifice flanges are used instead of the standard pipe flanges when orifice plate or flow nozzle is used. The basic purpose for this is to measuring the flow rate of either gases or liquids in the respective pipeline. These flanges are used in various industrial applications and are available in various sizes and materials. Orifice Flange manufacturer Sunny Steel supplies Orifice Flanges, Plate Flanges, Datasheets and dimensional information ANSI 300 Flange - Orifice, Weld Neck, ANSI Class 300, B16.36 (in) ANSI 400 Flange - Orifice, Weld Neck, ANSI Class 400, B16.36 (in) ANSI 600 Flange - Orifice, Weld Neck, ANSI Class 600, B16.36 (in) ANSI 900 Flange - Orifice, Weld Neck, ANSI Class 900, B16.36 (in) ANSI 1500 Flange - Orifice, Weld
Image

ASTM A213 T22 alloy tube

ASTM A213 T22 is the part of ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes. We are manufacturer of ASTM A213 T22 alloy tube and supply high quality ASTM A213 T22 alloy tube in both large and small quantities worldwide and offer you the best prices in the market. ASTM A213 T22 Standard covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes. + SA 213-T22 u-bended tube Grades containing the letter H in their designation have requirements different from those of similar grades not containing the letter H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements. ASTM A213 T22 tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified. Grade TP347HFG shall be cold finished. Heat treatment shall be done separately and
Image

Tubing, Casing and Line Pipes

Tubing and casing strings designed for the specific requirements for conveying gaseous media and combustible liquids or solids. ERW oil casing application and market analysis API Spec 5CT - Specification for Casing and Tubing API SPEC 5L - Standard Specification for Line Pipe API 5L Gr. B Standard specification Tensile test and hardness test on oil pipeline Properties &  Inspection Oil pipeline anti-rust varnish Pipeline project All wells drilled for the purpose of oil or gas production (or injecting materials into underground formations) must be cased with material with sufficient strength and functionality. API5L Steel pipe for pipeline transportation system Peotroleum and natureal gas industies - Steel pipe for pipeline transportation system. ERW steel pipe API 5L X60 steel pipe API 5L X70 steel pipe API Spec 5CT Casing pipe API Spec 5CT  – Specification 5CT/ISO 11960, Specification for Casing and Tubing, Eighth Edition, Petroleum and natu
Image

Seamless Steel Pipe and Tubes

Seamless steel pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow — liquids and gases (fluids), slurries, powders and masses of small solids. We can makes and markets cold-drawn and hot rolled seamless steel pipes and cold-drawn special-section seamless pipes which are widely applied in the industries of petrochemical, boiler, automobile, mechanical, construction, chain, electric of the company is 80000t. Our factories through ISO9001:2000 certificate, has aggressive leadships and outstanding professionals. Steel Pipe & Tubing - All you need to know Steel Pipe & Tubing seem similar at first blush and in fact they share many characteristics but they also have some important differences. Definitions: Steel Tubing  is a hollow steel shape intended for structural purposes and made from carbon, stainless, or galvanized steel further divided as: Mechanical Tubing  is use
Image

ASTM A335 P22 alloy steel pipe

ASTM A335 P22 alloy steel pipe with addition of chromium, molybdenum, and sometimes vanadium. Chromium, or chrome, improves high-temperature strength, increases oxidation resistance and raises the tensile, yield and hardness at room temperatures. Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices. Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test. Surface treatment: Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting. Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested. A335 is often called chrome moly pipe because of the chemical makeup of Molybdenum (Mo) and Chromium (Cr). Molybdenum increases the strength of steel as
Image

Difference between ERW, SSAW, LSAW

Steel pipe for pipe technology, can be divided into (SML), mainly as the Oilfield internal transportation pipeline and small-diameter high-pressure natural gas pipeline, used for a small number of long-distance gas pipeline, the vast majority of long-distance pipeline with Direct seam high frequency (ERW), spiral submerged arc (SSAW), LSAW three (LSAW).  ERW pipes The following table several steel pipes process characteristics and quality of performance comparison: High frequency straight seam welding ( ERW ) method is divided into two forms of induction welding and contact welding, hot-rolled wide volume as raw material, pre-curved, continuous molding, welding, heat treatment, sizing, straightening, cutting, etc. process, compared with the spiral weld short, high dimensional accuracy, uniform thickness, surface quality, pressure advantages, but the drawback is that only the production of small and medium-caliber thin-walled tube, weld easy to produce gray leaf spot, not fusion

Labels

Show more

Hot products

Bimetal Clad Pipe

Bimetal Clad Pipe
Bimetal Clad Pipe is cast with mold vanishing vacuum suction casting cladding process.

Contact us

Name

Email *

Message *