20mnk U29 Steel Arches for Mining Tunnel Secondary Support

• Type: U18, U 25, U 29, U36
• Standard: GB
• Composition: Stainless Steel Scrap
• Technique: Hot Rolled
• Shape: Block
• Surface Treatment: Color Coated
• Model NO.: U29
• Special Use: High-strength Steel Plate
• Application: Tool Steel Bar
• Materials: 20mnk
• Spec: 25u, 29u, 36u
• Length: 8,9,10,12
• Used for: Mine Laneway
• Advantage 1: Large Pressure Bearing
• Advantage 2: Easy to Installation
• Condition: New
• Keywords: Mining Tunnel Support
• Price Terms: Fob
• Transport Package: Standard Container Packing
• Specification: SGS, ISO, CE
• Trademark: China Coal
• Origin: Shandong Provice, China
• HS Code: 7301200000
• Production Capacity: 5000 Sets Per Month

Product Description

Introduction Of 20mnk U29 Steel Arches for Mining Tunnel Secondary Support

U25/U29/U36 Steel Arch Support for Mining  
 
U type steel support main purpose: for mine tunnel, mine tunnel secondary support, and mountain tunnel support .U25,U29,U36 type steel frame.
 
 
1.Spec.: 25U, 29U, 36U
2.Standard:GB/QB
3.Materials: 20MnK, Q275
4.Length: 8,9,10,12 
 
1. U Steel arches is made of U steel, include 25U 29U 36U , the mateiral is 20Mnk, the steel Grade is GB Chinese standard, and the Yield strength is 365N/mm.
2. The Tensile Strength is 540N/mm
 
Application Of 20mnk U29 Steel Arches for Mining Tunnel Secondary Support
 
It is mainly used for mine laneway, mine laneway secondary support, and the support of the mountain tunnel in supporting purposes.
 
 
Feature Of 20mnk U29 Steel Arches for Mining Tunnel Secondary Support
 
 
Large pressure bearing , easy to installation not easy to deformation ,etc.
 
Why choosing China Coal group?
 
1.We are manufacturers of producing U steel support.We have professional technician to design and specialized staffs to produce according to your requirements. After production, we will inspect strictly.

2. Having more than 20 years experience.
 
 
 U beam arch
 
1). U beam steel channel used to supporting the channel or mine.
2). U beam arch made by U beam steel.
3). U beam steel material: 20MnK, and etc.
4). U beam steel type: U18, U 25, U 29, U36
5). U beam arch must be made accordding to the drawing that you offered

Parameter Of 20mnk U29 Steel Arches for Mining Tunnel Secondary Support
 

Size	Material	Theoretical weight (kg/m)	cross-sectional area (cm2)	Height	Thickness	Width	Leg thickness
25U	Q275B/ 20Mnk	24.95	31.79	+1.0 120 -1.5	+0.5 15 -1.2	+1.0 130 -3.0	+0.8 6.3 -0.5
29U	Q275B/ 20Mnk	29.00	37.00	+1.0 124 -1.5	+0.5 16 -1.2	+1.0 150.5 -3.0	+0.8 7.2 -0.5
36U	20Mnk	35.87	45.70	+1.0 138 -1.5	+0.5 17 -1.2	+1.0 171 -3.0	+0.8 7.8 -0.5
40U	20Mnk	40.05	51.02	+1.0 149 -1.5	+0.5 20.2 -1.2	+1.0 171 -3.0	+0.8 8.5 -0.5

Photos Of 20mnk U29 Steel Arches for Mining Tunnel Secondary Support