1TMC ( Techno Material Corp.)

Wear Resistant Twin Wall Pipe System

2TMC ( Techno Material Corp.)

▣ Applications of Twin pipe & Twin Elbow for CPT

3TMC ( Techno Material Corp.)

▣ Twin Wall Pipe System

■ Features

● Multi-layer pipe for abrasion resistance piping systems

▶ Inner pipe : hardened steel (HRA 75 ~85 )

▶ Outer pipe : high ductility low carbon steel

(max HRC25)

● High wear resistance

● Absorb impact and contain pressure

● Applicable hydraulic piping system

▶ Concrete pump truck, industrial pipe system

4TMC ( Techno Material Corp.)

▣ Newly Designed Twin wall pipe for CPT – Characteristics Ⅰ

MULTI- LAYER PIPE HARDNESS PROFILE

0

200

400

600

800

INSIDE PIPE

MIC

RO H

ARDN

ESS(

HV)

OUTSIDE PIPE

• Hardened Inner Liner for Abrasion Resistance and High Strength o

uter Tube

-. An inner liner hardened to at least Hv 600

-. A low-carbon outer shell to absorb impact and contain pressure

5TMC ( Techno Material Corp.)

Manufacture

Inner wall

Hardness

Outer wall

Hardness)Abrasive Wear

Impact Wear Process Cost, %

Induction Hardening(America)

HRC 58 ~ 62(HV600~680)

HRC 20 ~ 25 ◎ △

Thermo MechanicalProcess

△

Flame hardening(Germany)

HRC 60 ~ 65(HV720~800)

HRC 20 ~ 25 ◎ △

Thermo MechanicalProcess

△

TMC Ltd.(Korea)

HRC 60 ~ 65(HV

620~780)

HRC 20 ~ 25 ◎ ○

MechanicalProcess

(patterned)

○

범례 : : Excellent, ○ : Good , : Moderate , × : poor◎ △

▣ Newly Designed Twin wall pipe for CPT – Characteristics Ⅱ

6TMC ( Techno Material Corp.)

▣ Abrasion test (ASTM G65) Twin wall pipe

Abrasion Wear of INNER PIPE

0

10

20

30

40

50

60

C Developed

Wea

r lo

ss(m

m)

Flame Hardening TMC

• Abrasion test of Hardened Inner Liner

-. Long life in highly abrasive applications

-. Superior wear resistance to gas flame hardening and induction hardening

7TMC ( Techno Material Corp.)

▣ Field test of Twin wall pipe For CPT

• TMC twin wall pipe estimated wear rates by CPT

-. Lifetime pipe (M3) : min 100,000

8TMC ( Techno Material Corp.)

▣ Applications of Twin wall pipe