Double Layer Wear Resistant Elbow for Concrete Pump Truck

Outer protective layer

According to the wear situation at the end, both ends of the elbow are designed with a 35mm long thickened wear-resistant casing made of high chromium cast iron with a hardness of over HRC62.

Inner Wear-resistant Layer

Regarding the wear analysis of the elbow, this part of the elbow undergoes the most severe wear and the greatest impact force, which is the first area to fail. To address this, uneven thickness is used, gradually increasing from both ends towards the middle, and gradually increasing from both sides towards the middle.

According to the situation of little wear on the inner side of the elbow, a 6mm wear-resistant layer is used for the lower half of the elbow.

The wear law of elbows

The function of elbows is to change the flow direction of the concrete, so the impact and wear force on the outer arc surface of the elbow is the greatest, especially at the end of  the  elbow,  which is subjected to the greatest impact force and fails the fastest.

Technological innovation of elbows.

Structural innovation: dual-layer,split structure, gradual thickening from both ends and sides towards the middle to address wear on the outer arc surface.

Material matching: high-carbon and high-toughness high chromium cast iron is used for the easily worn outer arc, while cost-effective bearing steel is used for the inner arc.

Process innovation: multiple processes are used, such as casting for the outer arc and die forging for the inner ball, and combination welding.

Precise reinforcement of vulnerable areas

▲Improved wear resistance of materials invulnerable areas.

▲Different thickness design of wear-resistant layer invulnerable areas.

Wear-resistant material matching

▲Developed a high-carbon, high-chromium, high-toughness cast iron through collaboration with peers and universities, with excellent wear resistance, impact resistance, high toughness, and strength.

▲Cost-effective bearing steel material is used for the wear-resistant layer of the inner arc, which is formed by die forging.

Multiple process combinations

▲Multiple process combinations achieve mass production of parts with reduced costs.

▲Casting is used for the inner liner of the outer arc , and molding is used for the outer   layer; Double-layer integral die forging and integral quenching are used for the inner arc. The precision of the inner and outer arcs is guaranteed by special machine tools, and automatic welding machines are used for welding.

Double-layer wear elbow data

A concrete pump elbow fails where the aggregate hits it: the outer radius and the two ends. The double-layer design puts the wear-resistant material where the impact is and leaves the low-wear side thinner, so the elbow keeps its flow area while the working surface lasts longer.

Elbows are matched to the pump model, not to a nominal pipe size, because flange drilling and centre-line radius differ between manufacturers. Send the pump model and the existing elbow drawing if you have one.

Double Layer Wear Resistant Straight Pipe for Concrete Pump Truck

Dual-layer wear-resistant straight pipeline

Two layers, heterogeneous segmentation of the inner layer and outer layer.

High chromium cast iron wear-resistant casing (3 or multiple casings at the mouth end, symmetrical at both ends), theouter surface of the wear-resistant casing is coated with a composite bowl joint；

Bearing steel 52100 material is used as the inner tube, with a hardness of HRC63-65；

The outer tube is made of E345 seamless pipe, with high strength and toughness after special treatment. The inner wall of the outer tube is reinforced with six reinforcing ribs and positioned for composite assembly.

Wear law of straight pipelines.

According to research and analysis, the wear of the straight pipeline of concrete pump trucks is mainly manifested in the large wear at the end, especially at the flange welding position,which results in large wear and quick failure.

Technological innovation of straight pipelines

Structural innovation

▲ Special structural design with two layers, with the inner layer heterogeneously segmented to precisely reinforce vulnerable areas.

▲ Strengthening at the end  and segmented assembly of the pipe body.

Material matching

▲ The inner layer material is divided into end material and pipe body  material. Depending on the different wear, acombination of high-chromium cast iron and bearing steel is used.

▲ The outer layer is made of E345 seamless pipe, which has high strength   and strong pressure bearing capacity after heat treatment.

Technical characteristics of straight pipelines.

Precise reinforcement of vulnerable areas

▲ By adjusting the structure, the wear-resistant material at the end is changed to improve its wear resistance performance. At the same time, it can withstand high-temperature welding without affecting its wear resistance;

▲ The length of the strengthening area is determined according to the degree of wear in the wear area.

Self-developed core processes

▲ Solve major technical problems in welding and forming processes forbearing steel；

▲ Optimize the heat treatment process for the inner and outer tubes, achieving high hardness for the inner tube and high strength and toughness for the outer tube；

▲ Composite assembly, with special adhesive bonding used for the joint and wear-resistant sleeve of the pipeline.

Real-time detection of key parameters

▲ The entire heat treatment process is automated with intelligent control, ensuring stable and reliable quality；

▲ The multi-stage structure enables full inspection of the inner tube hardness, cracks, roundness, etc；

▲ The finished product is hydrotested at a pressure of 17MPa according to industry standards, with no leakage.

FORGED ELBOW 

SOCKET WELDING ELBOW OD:1/8″-4″

PRESSURE:CLASS3000.CLASS6000.CLASS9000

ANGLE:45° 90°

THREADED ELBOW OD:1/8″-4″

PRESSURE:CLASS2000,CLASS3000.CLASS6000

ANGLE:45° 90°

FORGED TEE/CROSS 

SOCKET WELDING TEE/CROSS OD:1/8″-4″

PRESSURE:CLASS3000、CLASS6000,CLASS9000

THREADED TEE/CROSSOD:1/8″-4″

PRESSURE:CLASS2000.CLASS3000.CLASS6000

FORGED COUPLING/CAP 

SOCKET WELDING COUPLING/CAP OD:1/8″-4″

PRESSURE:CLASS3000.CLASS6000.CLASS9000

THREADED COUPLING/CAP OD:1/8″-4″

PRESSURE:CLASS3000.CLASS6000

FORGED NIPOLET 

SOCKET WELDOLETOD:1/8″-4″

PRESSURE:CLASS3000,CLASS6000

THREADOLET OD:1/8″-4″

PRESSURE:CLASS3000,CLASS6000

WELDOLET OD:1/8″-24″

PRESSURE:STD XS SCH160

OD:1/2″-60″

THICKNESS:4mm-200mm

BENDING RADIUS:R=1D-10D

ANGLE:30° 45° 60° 90° 180

OUTSIDER:1/2″-88″

THICKNESS:4 mm-120mm

BENDING RADIUS: R=1.5D and above

ANGLE: 0°-180°

OUTSIDER: 1/2″ – 60″

THICKNESS:4mm – 200mm

Union Elbow

We manufacture, supply and export Union Fittings which are very useful in various types of connecting functions in the big industries. Our union fittings are of four types to be used in many different works in the varied industries. Our in-house production of Union Elbow is manufactured with excellent quality of raw materials to suit the fixing work mainly in electrical industries, air conditioning industries. These products of ours have been well demanded and extensively used by the clients of diverse category in different size. These Elbows have part numbers of numerous kinds to select from.Union Elbows offer by us to our clients are manufactured in many different sizes and dimensions to meet the specific requirement.

Material of Construction:

Monel :
Grade: Monel 400, Monel K500, Monel R-405
Nickel :
Grade: Nickel 200, Nickel 201
Inconel :
Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718
Incoloy :
Grade: Incoloy 800, Inconel 800H, 800HT
Hastalloy :
Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
Titanium :
Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11
Stainless Steel :
Grade: ASME / ASTM SA / A403 SA / A 774 WP-S, WP-W, WP-WX, 304, 304L, 316, 316L, 304/304L, 304H, 316H, 316/316L, 321, 330, 347, 309/S, 310/S, 317/L, 333, 410/S, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404
Carbon Steel :
Grade: ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70
Duplex Steel:
Grade: ASTM / ASME A/SA 182 UNS F44, F45, F51, F53, F55, F60, F61
Alloy Steel:
Grade : ASTM SA 182 – E25, E26, E27, E28, E29B, E30B, E39B, E40B, E36B, E36C, E41B, AISI4130, AISI4140, AISI4340, 42CRMO4, 16MNCR5, 20MNCR5, 21CrMoV57, EN353, EN354, F11, F22, F91, F9, P11, P22, P91, P9, P5, P92, EN42J, EN8, EN19

Union Cross

We offers dimensionally exact, robust and simple to install Union Cross. These union cross are available in multiple specifications, these four way fittings often have female threaded ends or solvent welded socket ends and these union cross fittings are in demand for fire sprinkler systems.

Material of Construction

Monel :

Grade: Monel 400, Monel K500, Monel R-405

Nickel :

Grade: Nickel 200, Nickel 201

Inconel :

Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718

Incoloy :

Grade: Incoloy 800, Inconel 800H, 800HT

Hastalloy :

Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X

Titanium :

Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11

Stainless Steel :

Grade: ASME / ASTM SA / A403 SA / A 774 WP-S, WP-W, WP-WX, 304, 304L, 316, 316L, 304/304L, 304H, 316H, 316/316L, 321, 330, 347, 309/S, 310/S, 317/L, 333, 410/S, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404

Carbon Steel :

Grade: ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70

Duplex Steel:

Grade: ASTM / ASME A/SA 182 UNS F44, F45, F51, F53, F55, F60, F61

Alloy Steel:

Grade : ASTM SA 182 – E25, E26, E27, E28, E29B, E30B, E39B, E40B, E36B, E36C, E41B, AISI4130, AISI4140, AISI4340, 42CRMO4, 16MNCR5, 20MNCR5, 21CrMoV57, EN353, EN354, F11, F22, F91, F9, P11, P22, P91, P9, P5, P92, EN42J, EN8, EN19

Tube End Closure

We are the largest firm catering all the needs of customers regarding Tube End Closure. We supply these in various sizes, standards, materials, specifications and custom dimensions. We also facilitate customers with quality test reports that prove quality.

Tube End Closure has a unique three-piece design having a body, with as hardened ferrule and nut. Unlike traditional compression joint, this nut is screwed on to the body. This ferrule grips the pipe in position and perceptibly holds the pipe surface to provide a positive seal. When it is fully tightened ferrule is distorted slightly in the middle sections and acts as a spring. The spring action of ferrule control tension between the body and nut to prevent it from loosen due to the strain or vibration.

Straight Union

We are the reliable and the most trusted name in manufacturing and providing wide range of Straight Union. These fittings are of premium quality and are highly durable which enables your machinery to work efficiently. These fittings are manufactured by premium quality metals and alloys with special coating to avoid corrosion or decay which ensure better contact between pipe and these fittings to provide a consistent and uninterrupted flow within the system. These fittings are available in different sizes, shapes, thickness and other dimensions as per allotted by our prestigious clients.

We provide various types of fittings such as fittings of steel and its alloys, fittings of copper and its alloys etc. These fittings are leak proof with life long warranty without compromising with the strength of these fittings. Along with all other qualities, our fittings are highly appreciated for their superior finish with sophisticated and sleek design.

Tube Union Fitting is a just like compression tube fitting that is fixed by pressure caused by the interaction of threaded portions of the fitting. Union Tube Fittings is utilized to connects ends of 2 tubes.

Material of Construction:

Monel :

Grade: Monel 400, Monel K500, Monel R-405

Nickel :

Grade: Nickel 200, Nickel 201

Inconel :

Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718

Incoloy :

Grade: Incoloy 800, Inconel 800H, 800HT

Hastalloy :

Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X

Titanium :

Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11

Stainless Steel :

Grade: ASME / ASTM SA / A403 SA / A 774 WP-S, WP-W, WP-WX, 304, 304L, 316, 316L, 304/304L, 304H, 316H, 316/316L, 321, 330, 347, 309/S, 310/S, 317/L, 333, 410/S, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404

Carbon Steel :

Grade: ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70

Duplex Steel:

Grade: ASTM / ASME A/SA 182 UNS F44, F45, F51, F53, F55, F60, F61

Alloy Steel:

Grade : ASTM SA 182 – E25, E26, E27, E28, E29B, E30B, E39B, E40B, E36B, E36C, E41B, AISI4130, AISI4140, AISI4340, 42CRMO4, 16MNCR5, 20MNCR5, 21CrMoV57, EN353, EN354, F11, F22, F91, F9, P11, P22, P91, P9, P5, P92, EN42J, EN8, EN19