Construction & Roadways
Construction & Roadways

A road is a linear way for the conveyance of traffic that mostly has an improved surface for use by vehicles (motorized and non-motorized) and pedestrians. Unlike streets, the main function of roads is transportation.

Highway Crash Barrier

Many road accidents involve run of the road vehicles colliding with hazardous obstacles, rolling down high embarkments, veering of the carriage way on sharp curves or crossing over the median and colliding with an oncoming vehicle. Guardrails are effective means to reduce the risk of and to mitigate the severity of such accidents by redirect a vehicle away from the energy of the errant vehicle.

As such Guardrails constitute an important safety furniture. constant vibration and strain, creating a host of challenges.

We manufacture the complete range of hardware and fasteners for all types of guard rails and crash barriers.

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Carriage Bolt

There are specially designed types of bolts for these applications which are termed carriage bolts. Earlier in the 1800s, these bolts were used in the construction of carriages and their wheels. That is where they get their name. These bolts come in various styles and head and neck shapes.

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Size Range
Diameter

M8 to M20 5/16" to 3/4"

Length

20 mm to 200 mm 1" to 8"

Fish Bolt

A fish plate, splice bar or joint bar is a metal connecting plate used to bolt the ends of two rails into a continuous track .

Fish bolt is the fastener used on this plates for jointing.

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Size Range
Diameter

3/4" to 1-3/4"

Length

4" to 12"

Guard Rail Bolt/Crash Barrier Bolt

These Fasteners are mainly used in installation of road crash barriers /guard rail at the roads sides and turning points of roads to safeguard the fatal accidents and safety of vehicles

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Size Range
Diameter

Metric: M8 to M20
Inch: 5/16" to 3/4"

Length

Metric: 20 mm to 300 mm
Inch: 1" to 8"

Heavy Hex Structural Bolt

Heavy hex structural bolts are designed for steel-to-steel connections and include ASTM A325 and A490 specifications, which covers bolts from 1/2” up to 1-1/2” in diameter. Since these heavy hex bolts are intended for structural connections, they have shorter thread lengths than standard hex bolts.

Heavy Hex Bolts are designed for use in a variety of high temperature, high strength industrial applications, such as with steel fabrication and general construction. They feature a thicker head than standard or regular hex bolts, and offer a greater bearing surface that distributes the clamping load over a wider area.

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Size Range
Diameter

Metric : M12 to M42
Inch: 5/16" to 2"

Length

Metric : 20 mm to 300 mm
Inch: 7/8" to 12"

Hex Head Bolt

As the name implies, these bolts feature a hexagonal head or a hex head, that is suitable for tightening with a wrench or socket. A hex bolt may be fully threaded or may feature an unthreaded shoulder. Hex bolts are often used to fasten wood to wood, metal to wood, or metal to metal

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Size Range
Diameter

Inch : 5/16"to 2"
Metric : M8 to M42

Length

Metric: 20 mm to 300 mm
Inch : 7/8" to 12"

Hex Head Screw

Hex Cap Screws are fasteners featuring a hexagonal, six-sided, head with a washer face on the bearing surface and a chamfered point. Commonly used in construction and machine assemblies, hex cap screws are one of the most common fasteners used on the jobsite today.

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Size Range
Diameter

Metric: M8 to M42
Inch: 5/16 “to 2"

Length

Metric: 20 mm to 300 mm
Inch: 7/8" to 12

HSFG Bolt Assembly

High strength bolts or structural bolts are made to be used with heavy hex nuts to connect structural members. To be considered a structural connection, it has to conform to specific ASTM standards; specifically, ASTM A563 or ASTM A194.

Structural bolts are also categorized by grades. The grading system takes into consideration the bolt’s material, its size range, its proof load, the minimum yield strength, and the minimum tensile strength.

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Size Range
Diameter

Metric: M12 - M48

Length

length upto 10

Shank Studs

ASTM A193 Grade B7 Studs /Shank studs coupled with a pair of nuts are most commonly used fasteners for bolting carbon steel pipelines.P.I is a manufacturer and supplier of A193 Grade B7 Stud Bolts with full threads, double end threads and tap end thread configuration. We offer B7 stud bolts in both metric and imperial sizes with coarse, fine & extra fine threads. These stud bolts are produced with full compliance to all requirements of ASTM A193 Grade B7 specification and supplied with authentic 3.1 certificate.

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Size Range
Diameter

1/2" to 2-1/2"

Length

25 mm to 500 mm

Heavy Hex Nut

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Size Range
Diameter

Metric: M12 to M42
Inch: 1/2" to 1-7/8"

Length

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Hex Nut

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Size Range
Diameter

Metric: M8 to M80
Inch: 5/16" to 3"

Length

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Button Head Socket Bolt

Button head socket cap screws are also known as round head or dome head socket screws. They are manufactured with a smooth, slightly rounded dome at the head, which tends to be somewhat larger and more bulbous than standard cap screw varieties.

Often, this means that a button head socket screw can accommodate a larger gauge of hex key or driver, and thus can be affixed with more torque to achieve greater clamping forces.

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Size Range
Diameter

M8 to M22

Length

50mm to 175mm

Hardened Steel Washer

Hardened washers are made physically stronger through hardening or carburizing, but are generally smaller in size than your standard washer. Hardened flat washers are designed with extra strength and can be used with Grade 8 bolts and other heat-treated fasteners.

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Size Range
Diameter

Metric: M12 to M42
Inch: 1/2" to 2"

Length

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Plain Washer

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Size Range
Diameter

Metric: M8 to M42
Inch: 5/16" to 2"

Length

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Spring Lock Washer

Unlike flat washers, which are placed on both the bolt and nut side, spring washers only go on the nut side of the fastener to establish a bond. A spring washer offers axial flexibility that's intended to prevent loosening of the fastener with which it's paired.

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Size Range
Diameter

Metric: M8 to M30
Inch: 5/16” to 1¼"

Length

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