Ehwa Diamond Industrial Co., Ltd. has been researching patterned diamond blade technology since the 1990s. By 2001 they had created a dedicated research team and obtained their first patent. Their patterned blades provide alternating layers that increase both cutting speed and tool life compared to random blades, as demonstrated by performance tests. The technology delivers a precise cut in one smooth stroke.

2. INNOVATOR IN TECHNOLOGY / SINCE 1975
2000 : Conceptual product design, Exploration of manufacturing technology.
2001. 7 : Creation of a dedicated research team.
2001. 9 : 1st patent on patterning technology. (Patent no.10-0428947 / US 6626167)
2002. 1 : Design for manufacturing process completed.
Technology
2003. 4 : Start of test marketing.
Current : Design and production ready for each product category.
Over a dozen patents on patterned diamond design and
production registered and pending.
Patterning technology:
Ehwa has been researching patterned blades since the1990s.
However, a straightforward pattern is only random
distribution at its best.
Random Saw Pattern Saw
Alternating layers - How it works:
Side view
Random saw Pattern saw Alternating layer matrix saw
Performance:
Performance test results show dramatic increase
in both cutting speed and tool life.
Printed by Ehwa diamond. 10 / 2008
Use approved safety guards and protective goggles.
Do not use in curved or obliqued cuts.
EHWA DIAMOND INDUSTRIAL CO., LTD.
520-2, Won-dong, Osan-city, Gyeonggi-Do, 447-804, Korea Website: www.ehwadia.com /
Tel: + (82-31) 370 -9300 / Fax: + (82-31) 370-9191 e-mail: salesinfo@ehwadia.co.kr

3. Universal
Revolutionary dual-diamond concentrated segmented blade technology delivers
a precise cut in one smooth stroke. The segmented blade cutting edges feature
alternating mirrored angle of attack for faster opening speed and longer blade life.
EHWA DIAMOND INDUSTRIAL CO., LTD.

4. Patent pending
Revolutionary dual-diamond concentrated segmented blade technology
delivers a precise cut in one smooth stroke. The segmented blade
cutting edges feature alternating mirrored angle of attack for faster
opening speed and longer blade life.
SIZE
4" (100) X 2.2 12" (300) X 2.8 / 3.2
4.5" (115) X 2.2 14" (350) X 2.8 / 3.2
5" (125) X 2.2 16" (400) X 3.2 / 3.6
6" (150) X 2.2 18" (450) X 3.2 / 3.6
7" (180) X 2.4 20" (500) X 3.6 / 4.2
8" (200) X 2.4 22" (550) X 3.6 / 4.2
9" (230) X 2.4 24" (600) X 3.6 / 4.2
10" (250) X 2.4 / 2.6 26" (650) X 3.6 / 4.2
Multi purpose Available sizes: 4" - 26" 30% faster cutting Faster opening speed
High concentration
Low concentration
High concentration
Low concentration
Printed by Ehwa diamond. 10 / 2008
Use approved safety guards and protective goggles.
Do not use in curved or obliqued cuts.
EHWA DIAMOND INDUSTRIAL CO., LTD.
520-2 , Won-dong, Osan-city, Gyeonggi-do, 447-804,Korea Website : www.ehwadia.com /
Tel : + (82-31) 370 -9300 / Fax : + (82-31) 370 -9191 e-mail : salesinfo@ehwadia.co.kr

5. SMART BLADES
SMART BLADES
General purpose
SMART BLADES
Smart blades are designed for fast cutting in various materials. Manufactured with the latest
development of the optimum combination of a new bond matrix and diamonds,
smart blades provide 10% to 30% increase in cutting speed.
PRODUCT LINE
Supreme Premium Standard
EHWA DIAMOND INDUSTRIAL CO., LTD.

6. SMART BLADES EXTREME SPEED!
Smart blades are designed for fast cutting in various materials. Manufactured with the latest
development of the optimum combination of a new bond matrix and diamonds,
smart blades provide 10% to 30% increase in cutting speed.
Increased number of segments and shorter
length of segment result in faster cutting speed.
Side reinforced steel core prevents
wobbling and noise.
SUPREME
Cooling hole design.
Improved cutting speed.
PREMIUM
Simple design.
Economical Smart blade.
STANDARD
Printed by Ehwa diamond. 10 / 2008
Use approved safety guards and protective goggles.
Do not use in curved or obliqued cuts.
EHWA DIAMOND INDUSTRIAL CO., LTD.
520-2 , Won-dong, Osan-city, Gyeonggi-do, 447-804,Korea Website: www.ehwadia.com /
Tel : + (82-31) 370 -9300 / Fax : + (82-31) 370 -9191 e-mail: salesinfo@ehwadia.co.kr

7. VELOCE
VELOCE
Vacuum brazed tools
VELOCE
Vacuum brazed technology provides fast, all-purpose cutting and grinding tools.
Veloce tools help reduce cost and improve efficiency.
PRODUCT LINE
Blade Cup Core drill Forming wheel
EHWA DIAMOND INDUSTRIAL CO., LTD.

8. VELOCE
Vacuum brazed technology provides fast, all-purpose cutting and grinding tools.
Veloce tools help reduce cost and improve efficiency.
DIAMETER THICKNESS HEIGHT
4" (100mm) 2.2
4.5" (115mm) 2.2
5" (125mm) 2.2
6" (150mm) 2.5
7" (180mm) 2.5 3.0
8" (200mm) 2.5
9" (230mm) 2.8
10" (250mm) 2.8
12" (300mm) 3.1
14" (350mm) 3.1
UD Blade
Cup Core drill
DIAMETER W TYPE DIAMETER W TYPE
4" (100mm) Rim 20mm Rim
20
5" (125mm) Seg
~ 3.0 ~ 5.0
100mm Seg
Profile wheel
DIAMETER SHAPE WORKING THICKNESS
B 1/2" 13mm
B 3/8" 10mm
6" (150mm) ~ E 1/2" 13mm
10" (250mm) E 3/8" 10mm
F 1/2" 13mm
F 3/8" 10mm
Forming wheel
WORKING THICKNESS SHAPE THREAD TYPE
15mm B
M14,
20mm F
5/8 -11
30mm E
Printed by Ehwa diamond. 10 / 2008
B F E
Use approved safety guards and protective goggles.
Do not use in curved or obliqued cuts.
EHWA DIAMOND INDUSTRIAL CO., LTD.
520-2 , Won-dong, Osan-city, Gyeonggi-do, 447-804,Korea Website: www.ehwadia.com /
Tel : + (82-31) 370 -9300 / Fax : + (82-31) 370 -9191 e-mail: salesinfo@ehwadia.co.kr

9. RESCUE BLADES
RESCUE BLADES
Vacuum brazed technology
RESCUE BLADES
Cuts almost anything:
Concrete Cast Iron Masonry Stone Steel Brick Wood Copper Fiber Board
Rebar Ductile Iron Stucco PVC Pipe HDPE
EHWA DIAMOND INDUSTRIAL CO., LTD.

10. RESCUE BLADES
VACCUM BRAZED TECHNOLOGY
GENERAL SPECIFICATION
SIZE PART NUMBER THICKNESS (mm)
12” (302mm) T - UO45S 3.1
14” (352mm) T - UO45S 3.1
16” (409mm) T - UO45S 3.3
APPLICATION
Concrete Cast Iron Masonry Stone Steel Brick Wood Copper Fiber Board
Rebar Ductile Iron Stucco PVC Pipe HDPE
Steel pipe Wood Brick H-beam PVC pipe
Printed by Ehwa diamond. 10 / 2008
Use approved safety guards and protective goggles.
Do not use in curved or obliqued cuts.
EHWA DIAMOND INDUSTRIAL CO., LTD.
520-2 , Won-dong, Osan-city, Gyeonggi-do, 447-804,Korea Website: www.ehwadia.com /
Tel : + (82-31) 370 -9300 / Fax : + (82-31) 370 -9191 e-mail: salesinfo@ehwadia.co.kr

11. CONSTRUCTION
CONSTRUCTION
Laser welded blades
GENERAL PURPOSE SAW BLADES
General purpose blades are for a wide range of materials (concrete brick, concrete block,
granite, marble, tile, construction materials, etc.). Laser welded blades
provide safe and reliable cutting.
PRODUCT LINE
Turbo Slant Turbo Gear M-shape Arrow
EHWA DIAMOND INDUSTRIAL CO., LTD.

12. GENERAL PURPOSE SAW BLADES
General purpose blades are for a wide range of materials (concrete brick, concrete block,
granite, marble, tile, construction materials, etc.). Laser welded blades
provide safe and reliable cutting.
Turbo type
SIZE
4" (100) X 2.2 16" (400) X 3.2 / 3.6
M-shape segment type
4.5" (115) X 2.2 18" (450) X 3.2 / 3.6
5" (125) X 2.2 20" (500) X 3.6 / 4.2
6" (150) X 2.2 22" (550) X 3.6 / 4.2
7" (180) X 2.4 24" (600) X 3.6 / 4.2
8" (200) X 2.4 26" (650) X 3.6 / 4.2
Arrow shape segment type 9" (230) X 2.4 28" (700) X 4.2 / 4.5
10" (250) X 2.4 / 2.6 30" (750) X 4.2 / 4.5
12" (300) X 2.8 / 3.2 32" (800) X 4.5 / 4.8
14" (350) X 2.8 / 3.2
SPEC. # APPLICATION
Gear type Very hard materials.
M 10 Heavy reinforced concrete, hard granite
paving block, hard clay roof tile.
Medium to hard materials.
M 20 Washed concrete, medium
reinforced concrete.
Universal materials.
Blade with flanges on both sides M 30
Light reinforced concrete.
Soft materials.
M 40
Building materials, masonry.
Abrasive materials.
M 50 Limestone, sandstone,
asphalt, green concrete.
Printed by Ehwa diamond. 10 / 2008
Slant U-gullet type
Use approved safety guards and protective goggles.
Do not use in curved or obliqued cuts.
EHWA DIAMOND INDUSTRIAL CO., LTD.
520-2 , Won-dong, Osan-city, Gyeonggi-do, 447-804,Korea Website: www.ehwadia.com /
Tel : + (82-31) 370 -9300 / Fax : + (82-31) 370 -9191 e-mail: salesinfo@ehwadia.co.kr