G 2T lined wearpipe is a seamless, monolithic lined pipe designed to provide maximum abrasion resistance in the most challenging environments.
G 2T Lined pipes consist of a layer of engineered alumina ceramic material applied to the inside wear surfaces of the pipe, then spun cast or troweled in place. The result is a monolithic liner with no seams or tiles. After curing the liner retains a hardness of between 8 & 9 on the Moh’s scale, yielding one of the best wear solutions for the most erosive applications.
G 2T cast lined pipe has been engineered to provide exceptional wear resistance in corrosive and high temperature environments. The chemical composition G 2T and seamless application limit the effects of corrosion in many applications. In addition, the high temperature capabilities of G 2T and good thermal shock resistance can provide exceptional abrasion resistance that no other material can match in environments up to 2200° F.
The combination of corrosion resistance and high temperature capabilities provide unquestionable advantages over the most common pipe materials such as; basalt, rubber, polyurethane, steel, cast iron or ceramic tile.
(for reference only)
|Sch #10||Standard||Sch #40|
Contact us for custom sizes.
Based on Mild Steel
|Mild Steel||G 2T Cast Lined Wear Pipe|
|Hardness||120-150 BHN||300-700 BHN|
|Max Temperature||750° F (400° C)||2195° F (1200° C)|
|Std. Sizes (OD)||Unlimited||4″ to 24″|
|Handling/Installation||Excellent||Heavy & Brittle|
|Fabrication||Unlimited||Very Limited (to pattern)|
|Emergency Repair||Easily Patched||No|
The outside surface is mild steel for easy welding and the interior of the pipe is lined with engineered G 2T ceramic material.
We recommend the use of St. Lawrence's fabrication services to eliminate processing and fabrication errors.
This section covers the field welding and cutting of our wearpipe products. It is intended solely as a guide. All St. Lawrence’s pipe products must be supported on both sides of the cut area to prevent damage to the pipe and or cutting equipment. Normal safety and workmanlike practices are recommended.
WARNING: Ceramic lined pipe must be support on both sides of the cut area to prevent damage to the pipe and or cutting equipment.
Ceramic lined pipe can be cut with an abrasive saw using an abrasive silicon carbide wheel. Working in 6 ̋ to 8 ̋ section of the outside diameter, cut the steel layer of the pipe shell only, avoid penetrating into the G 2T liner section of the pipe. After completion of cutting the steel layer, cut the G 2T layer. Repeat this procedure around the OD of the pipe.
Inspect surfaces to be welded – avoid welding areas that have tears, cracks and other discontinuities. Clean joint area at least 1/2 ̋ from welding joint; remove all loose scale, rust, moisture, grease, etc. Bring parts into as close contact as practical; root opening should not exceed 3/16 ̋. For separations greater than 1/16 ̋, increase leg of fillet weld by the amount of the opening.
All chipped areas should be filled with G 2T from St. Lawrence. Allow proper curing.
Working from the exterior of the pipe join the pipes using a low carbon e lectrode. Allow the pipe to cool before proceeding.
If ambient temperature of parts is below 70° F, preheat the weld zone and 6 ̋ of the adjacent material to 100° F.
Any low carbon electrode is acceptable. (AWS 5.1 – E7018 or 7016 type), 1/8 ̋ or smaller should be used. Se e below concerning welding Ultra-Met® Chromium Carbide Overlay Pipe