1. Excellent Durability
1.1. Use of high quality raw materials(KS D3575 STHG 12 / JIS G3429 STH 12 Standard).
1.2. Forming improved Mannesman type(Spun type), Increase the density and strength of materials.
1.3. Cylinder Bottom is more than twice as thick as design, increasing cylinder life and safety.
1.4. Add oxide removal process to prevent crack in cylinder Bottom.
1.5. Since the establishment of the company, Rofe Cylinder has recorded accident-free until now.(20 years)
2. Strict Quality Control
2.1. KS Q ISO 9001 / ISO 9001 Certification Quality Management System.
2.2. Verification of the quality of steel tubes(Raw Material) at the Korea Testing & Research Institute(KTR)
2.3. Total Inspection(100% Sorting, Key Items)
2.3.1. Hydraulic Test (Test Pressure : 3,553 psi)
: Volume / Weight / Permanent Increase Rate / Abnormal Expansion Check
2.3.2. Leakage Test (Test Pressure : 2,132 psi)
2.4. Durability Quality Acceptance Criteria(Mechanical Properties, Sidewall, Manganese steel)
2.4.1. Tensile strength : 108,024 psi (Pass Criterion) / 128,837 psi (Test Result(AVG))
2.4.2. Yield strength : 82,439 psi (Pass Criterion) / 117,132 psi (Test Result(AVG))
2.4.3. Elongate(%) : 15% (Pass Criterion) / 17% (Test Result(AVG))
2.5. Since the establishment of the company, Rofe Cylinder has recorded accident-free until now.(20 years)
3. Product Properties (Production Technology of about 500 Items)
3.1. Volume Range
: 1.0 ℓ ~ 10.5 ℓ (1.0, 1.1, 1.3, 2.0, 2.3, 2.8, 3.4, 3.7........10.2, 10.5 ℓ)
3.2. Outer Diameter
: Ø101.6, Ø140, Ø165.2
3.3. Thread Type (Neck of Cylinder)
: W20-14(V1,Tap), W28-14(V2,Tap), 3/4""-14-NGT, M20, 1""-11.5-NGT, 1.625-12 UN, etc
3.4. Shape Type (Bottom of Cylinder)
: Concave, Convex
3.5. Color
: Red, Gray, Blue, Green, Orange, White
3.6. Gas
: CO2, O2, N2O, AR, N2, Xe, BF3+H2, CH3F, H2, He, C3H6, C3H8, CH4, C2H2, etc
3.7. Use
: Industrial, Medical, Food and Beverage, Fire Fighting
3.8. Material
: Manganese Steel, Chrome-Molybdenum Steel