AISI 4130 Pipes, Tubes, Pipe Fittings, Flanges, Round Bars Supplier in Angola
SAE / AISI 4130 Pipe Fittings in Benguela, UNS G41300 Pipes Distributor in Lubango, ANSI B16.9 Pipe Fittings Stockist in Benguela, ASTM A519 Gr 4130 minimum 75K yield strength seamless pipes Distributor in Kalandula, ASTM A519 Grade 4130 Carbon Steel Pipe in Muxima, AISI 4130 85K Custom Pipes in Kalandula, ASTM A519 Gr 4130 Seamless Pipes in Kalandula, 80000 PSI Yield Strength - 95K UTS Pipes in Angola, AISI 4130 Pipe in Muxima, AISI 4130 WNRTJ Flanges in Huambo., AISI 4130 Drilling Pipes in Muxima, AISI 4130 Seamless Pipes Manufacturer in Angola, Alloy Steel 4130 Flanges in Angola, AISI 4130 Seamless Buttwelding 180° Returns in Angola
Table of Contents
- About AISI 4130 Flanges Manufacturer in Angola
- AISI 4130 Buttweld Fittings Specification in Angola
- AISI 4130 Pipe Fittings Forms & Availability in Angola
- Equivalent Grades ASTM A519 4130 Buttweld Pipe Fittings in Angola
- Chemical Composition of AISI 4130 Tubes in Angola
- Mechanical Properties of AISI 4130 Butt weld Pipe Fittings in Angola
- Price List of ASTM A519 Grade 4130 Pipes in Angola
- AISI 4130 Bars Ready Stock in Angola
- AISI 4130 Buttweld Pipe Fittings Production Range in Angola
Ready Stock of ASTM A519 4130 Pipes in Huambo., ASTM A519 4130 Seamless Pipes Supplier in Angola, Alloy Steel AISI 4130 Fittings Supplier in Lubango , Alloy Steel 4130 Pipe in Lubango, AISI 4130 Drilling Pipes in Muxima, AISI 4130 Seamless Buttwelding 180° Returns in Angola, AISI 4130 80K Seamless Pipes Manufacturer in Muxima, AISI 4130 API 6A 15K RTJ Weld Neck Flange in Lobito, AISI 4130 75K Seamless Pipes in Lubango, 75000 PSI yield Strength - 105K UTS Alloy Steel Pipe in Angola, AISI 4130 Alloy Steel Flanges Supplier in Angola, AISI 4130 Seamless Pipes Distributor in Angola, AISI 4130 Socket Weld Flanges Manufacturer in Angola, ASTM A519 Gr 4130 minimum 75K yield strength seamless pipes Distributor in Kalandula
Kalikund Steel & Engg. Co. is a renowned provider of 4130 Pipe Fittings & Flanges in Lubango, Angola. 4130 is an extensively used common alloy steel. 4130 steel is chromium-molybdenum alloy steel with minimum carbon content. It has a density of 7.85 g/cm3 (0.284 lb. /in3) and is heat-treated for hardness.
It’s outstanding welding steel that can be welded by making use of any commercial process and can be machined in its normal state. Implementations for 4130 steel alloy consists of pressurized gas cylinders, firearm parts, and clutch components, all of which needs good strength and precision while being light-weighted and machinable.
As AISI 4130 is a steel grade with good formability and ductility, it can be used to design numerous of AISI 4130 Fittings, that consists of straight tees, reducing tees, long-radius elbows, 3R elbows, caps, and reducers. This low alloy steel, which has a normal carbon content of 0.3 percent, a chromium content of 1%, and molybdenum content of 0.2 percent, is also generally used in petroleum projects.
This low alloy steel’s content is a through-hardening alloy with commendable adaptability in the annealed form. Since chromium and molybdenum are used as reinforcing factors in this low alloyed steel, the AISI 4130 Pipe Fittings & Flanges have good machinability, strength, fracture toughness, and durability.
Since these fittings have a low carbon content, they should be easy to weld. In reality, the AISI 4130 Buttweld Pipe Fittings and Flanges can be welded using any commercial shop methods due to its unique welding features. Furthermore, grade AISI 4130 can be machined easily in its standard or tempered form.
For 4130 Pipe Fittings & Flanges, Kalikund Steel & Engg. Co. provides delivery conditions such as Annealed, Normalized, Stress Relieved, Quenched, and Tempered. We supply an extensive range of 4130 Pipes Fittings & Flanges. Kalikund Steel & Engg. Co has formed long-term relationships with mega international producers and suppliers. The raw materials used to make these 4130 fittings is of the greatest quality. We provide a high-quality AISI 4130 Fitting to our clients. Our products and services is appreciated by customers around the globe and is offered at the most affordable rates in the industry.
AISI 4130 Pipes, Tubes, Pipe Fittings, Flanges, Round Bars Specification in Angola
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
|---|---|
| Pipe Fittings Form | Elbow, Tee, Reducer, Union, Coupling, Cross, Cap, Plug Pipe Fittings. |
| Elbow Form | Elbow, 45 Deg Elbow, 90 Deg Elbow, 180 Deg Elbow, Long Radius Elbow, Short Radius Elbow, LR Elbow, SR Elbow |
| Tees Form | Equal Tee, Pipe Tee, Unequal Tee, Long Sweep Tee. |
| Reducer Form | Butt weld Reducer, Concentric Reducer, Eccentric Reducer. |
| Pipe Caps Form | End Caps, Pipe Caps, Pipe End Caps. |
| Cross Form | Equal Cross, Unequal Cross, Reducing Cross. |
| Flanges Form | Slip On Flanges, Weld Neck Flanges, Socket Weld Flanges, Blind Flanges, Long Weld Neck Flanges, Orifice Flanges. |
| Pipes | Seamless Pipes |
| Size | 1″, 2″, 3″,4″, 5′, 6″, 8″ and 3.5″ OD, 4″ OD, 4.5” OD, 5.5″ OD 3.5″ OD x 2.3″ ID, 4″ OD x 2.5″ ID, 4.5″ OD x 3″ ID, 5″ OD x 3″ ID, 5.5″ OD x 3″ ID |
| Round Bars Form | Bright Bar, Hex Bar, Square Bar, Rectangular Bar, Flat Bars, Polished Bar, Threaded Bar. |
| Size | 5 mm To 500 mm and as per client design |
| Pressure | 7.5K, 10K, 15K, 22.5K and more as per client drawing and requirement. |
| Delivery Condition | Annealed, Normalized, Stress Relieved, Quenched & Tempered. |
| Product Specification Level (PSL) | PSL 1, PSL 2, PSL 3. |
| Supplementary Requirement | NACE MR0175 / MR0103 ISO 3183 / NACE TM0284 YS – MIN 85,000, UTS – 1,10,000 WITHSTANDING 15,000 PRESSURE. |
ANSI B16.9 ASTM A519 4130 Pipes, Tubes, Pipe Fittings, Flanges, Round Bars Forms & Availability in Angola
Seamless/ Welded 100% Radiography Tested
| Products | Size | |
| ASTM A519 4130 Carbon Steel Pipe Distributor in Lobito | AISI 4130 Custom Pipes Supplier in Lubango | Sizes 1/2″ – 48″ |
| AISI 4130 85K Custom Pipes Distributor in Benguela | 10mm AISI 4130 Tube Manufacturer in Lobito | |
| 4130 AISI Thick Wall Tube in Angola | A519 4130 L80 Seamless Alloy Steel Tube Supplier in Benguela | |
| Alloy Steel AISI 4130 Fittings Manufacturer in Kalandula | Chrome Moly 4130 90 Deg Short Radius Elbow Stockist in Muxima | |
| UNS G41300 Tees Supplier in Angola | Chrome Moly 4130 Reducer in Lubango | |
| Chromoly 4130 Cross in Huambo. | AISI 4130 End Caps Stockist in Angola | |
| ASTM A519 4130 Type 6B Welding Neck Flanges 5,000 PSI Supplier in Benguela | AISI 4130 API 6A 10K RTJ Weld Neck Flange Manufacturer in Kalandula | |
| AISI 4130 Round Bars Manufacturer in Benguela | UNS G41300 Type 6BX Blind Flanges 10,000 PSI in Angola | |
| 4130 Steel Bar Stockist in Muxima | AISI 4130 Hollow Bar Supplier in Angola | |
Equivalent Grades UNS G41300 Pipes, Tubes, Pipe Fittings, Flanges, Round Bars in Angola
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| AISI 4130 | G41300 | 1.7218 | – | 25CrMo4 | JIS G4105 | BS 970 | – |
Chemical Composition of Chromoly 4130 Pipes, Tubes, Pipe Fittings, Flanges, Round Bars in Angola
| Grade | Ni | C | Mo | Mn | Si | Fe | Cu | S | P | Cr | AISI 4130 | 0.50 max | 0.28-0.33 | 0.15-0.25 | 0.40-0.60 | 0.15-0.35 | 97.3-98.22 | – | 0.025 MAX | 0.035 MAX | 0.80-1.10 |
Mechanical Properties of Chromoly 4130 Pipes, Tubes, Pipe Fittings, Flanges, Round Bars in Angola
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.85g/cm3 | 1432 C | 460 MPa | 560 MPa | 21.50 % |
AISI 1.7218 Production Range in Angola
AISI 4130 75K Seamless Pipes Stockist in Lubango
AISI 4130 Alloy Steel Pipe Manufacturer in Angola
AISI 4130 Round Pipes Dealer in Kalandula
Chromoly 4130 Pipe in Lobito
AISI 4130 Pipe Manufacturer in Benguela
ASTM A519 Gr 4130 80K Seamless Pipes Manufacturer in Huambo.
25crmo4 Pipes Stockist in Muxima
SAE 4130 Custom Pipe in Lobito
AISI 4130 Pipe Supplier in Angola
AISI 4130 Steel Pipe Supplier in Muxima
ASTM A519 4130 Carbon Steel Pipe Distributor in Lobito
AISI 1.7218 Pipe Stockist in Muxima
ASTM A519 4130 Seamless Pipes Stockist in Kalandula
ASTM A519 Gr 4130 80K Seamless Pipes Distributor in Benguela
ASTM A519 4130 Pipes Supplier in Huambo.
ASTM A519 Gr 4130 Seamless Pipes Manufacturer in Benguela
Grade 4130 Alloy Steel 75K Seamless Pipe Distributor in Lubango
A519 4130 Pipe in Kalandula
25crmo4 Seamless Pipes in Angola
ASTM A519 Gr 4130 minimum 75K yield strength Seamless Pipes Dealer in Huambo.
AISI 4130 75K Drilling Pipes Manufacturer in Benguela
AISI 4130 75K Seamless Pipes Supplier in Muxima
Alloy Steel 4130 85K Pipe Stockist in Huambo.
80000 PSI Yield Strength - 95K UTS Pipes Distributor in Lubango
AISI 4130 80K Seamless Pipes Manufacturer in Angola
Chromoly 4130 Pipe Manufacturer in Kalandula
ASTM A519 4130 75K Pipes Distributor in Muxima
SAE 4130 85K Pipe Custom Pipe Stockist in Benguela
85000 PSI Yield Strength - 105K Ultimate Tensile Strength Pipe Dealer Angola
SAE / AISI 4130 Pipe Manufacturer in Lobito
Alloy Steel 4130 Tube Supplier in Angola
AISI 4130 Mechanical Tubing Dealer in Benguela
4130 Chrome Moly Tubing in Muxima
AISI 4130 Tube Manufacturer Stockist in Huambo.
4130 Seamless Alloy Steel Tube Stockist in Lubango
1 inch 4130 AISI Tube Manufacturer in Kalandula
10mm AISI 4130 Tube Distributor in Lobito
3 inch AISI 4130 Tube in Benguela
AISI 4130 Tube in Muxima
4130 AISI 2 inch Tube Distributor in Huambo.
ASTM A519 4130 Tubing Manufacturer in Kalandula
ASTM A519 4130 Seamless Tubing Manufacturer in Lobito
4130 Seamless Tubes Manufacturer Distributor in Lubango
AISI 1.7218 Tubing Manufacturer in Muxima
ASTM A519 Gr. 4130 Seamless Tubing in Benguela
25crmo4 Seamless Tubing Supplier in Angola
4130 Alloy Steel Seamless Tubing Stockist in Huambo.
Chrome Moly 4130 Tubing Supplier in Muxima
AISI 4130 Seamless Tubing Exporter Distributor in Lobito
4130 Square Tubing Distributor in Angola
AISI 4130 L80 Tube Supplier in Muxima
4130 Aircraft Tubing Manufacturer in Lobito
AISI 4130 L80 Seamless Tubes Supplier in Lubango
Alloy Steel 4130 Tube in Angola
Alloy Steel 4130 Round Tubing Distributor in Benguela
ASTM A519 4130 Mechanical Tubing Distributor in Muxima
AISI 4130 L80 Alloy Steel Welded Outlet Tubes Distributor in Kalandula
ASTM A519 4130 L80 Tubes in Lobito
AISI 4130 L80 L 80 Seamless Tubes Dealer in Angola
25crmo4 Tubes Supplier in Lubango
Alloy Steel AISI 4130 Seamless Pipe Fittings in Kalandula
ANSI B16.9 Pipe Fittings in Muxima
AISI 4130 Pipe Fittings Supplier in Benguela
SAE / AISI 4130 Pipe Fittings Supplier in Lubango
Alloy Steel AISI 4130 Fittings Manufacturer in Angola
High Quality AISI 4130 Pipe Fittings Supplier in Huambo.
4130 Seamless Fittings Stockist in Lobito
ASME B16.9 AISI 4130 Straight Pipe Fittings Stockist in Muxima
Thick Wall AISI 4130 Pipe Fittings Supplier in Lubango
AISI 4130 Buttweld Pipe Fittings Dealer Stockist in Benguela
ASTM A519 4130 90 Degree 3rd Double Backed Elbow Manufacturer in Muxima
AISI 1.7218 45 Deg Short Radius Elbow Manufacturer in Kalandula
ASTM A519 Grade 4130 90 Deg Long Radius Elbow Distributor in Benguela
ASTM A519 4130 45 Degree 3rd Double Backed Elbow Stockist in Lobito
Chrome Moly 4130 45 Degree 3rd Double Backed Elbow Stockist in Huambo.
Chromoly 4130 Long Sweep 45 degree elbow Manufacturer in Lubango
AISI 1.7218 Long Sweep 45 degree elbow Supplier in Angola
AISI 4130 90 Deg Short Radius Elbow Exporter in Kalandula
AISI 4130 Elbow in Lobito
ASTM A519 4130 90 Degree 3rd Double Backed Elbow in Huambo.
Chrome Moly 4130 Reducing Tees Stockist in Muxima
AISI 1.7218 Long Sweep Tees Stockist in Lobito
Chromoly 4130 Tees Dealer in Kalandula
ASTM A519 4130 Reducing Tees Supplier in Benguela
AISI 4130 Long Sweep Full Flow Tees Supplier in Angola
ASTM A519 Grade 4130 Tees in Lubango
ASTM A519 4130 Long Sweep Full Flow Tees in Huambo.
AISI 4130 Tee Distributor in Lubango
AISI 1.7218 Reducing Tees Distributor in Benguela
AISI 1.7218 Long Sweep Tee c/w Integral Bull Plug Distributor in Angola
AISI 1.7218 Reducer in Lubango
UNS G41300 Reducer Stockist in Benguela
UNS G41300 Reducer Supplier in Lobito
ASTM A519 4130 Reducer in Muxima
ASTM A519 4130 Reducer Stockist in Benguela
AISI 4130 Concentric Reducers in Huambo.
AISI 1.7218 Ecentric Reducers Distributor in Angola
Chrome Moly 4130 Ecentric Reducers Distributor in Angola
UNS G41300 Ecentric Reducers in Kalandula
Chrome Moly 4130 Ecentric Reducers Supplier in Lobito
High Pressure 4130 Seamless Pipe Cap in Kalandula
AISI 4130 Pipe Caps Manufacturer in Lubango
AISI 4130 Alloy Steel Pipe End Caps in Lobito
AISI 4130 ANSI B16.9 Pipe Cap Supplier in Huambo.
AISI 4130 End Caps Manufacturer in Angola
AISI 4130 Eccentric Reducer Exporter in Muxima
AISI 4130 Buttweld Reducer Dealer Distributor in Benguela
AISI 4130 Eccentric Reducer Distributor in Huambo.
Heavy Wall 4130 Seamless Eccentric Reducer in Lobito
ASME B16.9 AISI 4130 Reducer in Lubango
AISI 4130 Cross Manufacturer in Benguela
Alloy Steel 4130 Cross Supplier in Angola
AISI 4130 Alloy Steel Pipe Cross Supplier in Muxima
AISI 4130 Reducing Cross Dealer in Lobito
High Pressure 4130 Seamless Cross in Huambo.
Heavy Wall 4130 Seamless Cross Manufacturer in Muxima
AISI 4130 Buttweld Cross Distributor in Lubango
AISI 4130 Reducing Outlet Crosses Distributor in Kalandula
Chrome Moly 4130 Cross in Huambo.
High Quality AISI 4130 Cross Manufacturer in Lubango
AISI 4130 - Type 6BX Welding Neck Flanges 10000 PSI Distributor in Angola
Alloy Steel 4130 Flanges Stockist in Angola
AISI 4130 WNRTJ Flanges Supplier in Angola
AISI 4130 Alloy Steel Flanges Distributor in Angola
AISI 4130 API 6A 15K RTJ Weld Neck Flange Stockist in Angola
AISI 4130 Flanges in Angola
AISI 4130 Blind Flanges Dealer in Angola
Chrome Moly 4130 Flanges Distributor in Angola
ASME B16.5 AISI 4130 Flanges Stockist in Angola
AISI 4130 - Type 6BX Blind Flanges 15000 PSI Exporter in Angola
UNS G41300 Type 6BX Welding Neck Flanges 10,000 PSI in Benguela
ASTM A519 4130 Type 6B Welding Neck Flanges 5,000 PSI Manufacturer in Muxima
Chromoly 4130 Type 6BX Welding Neck Flanges 10,000 PSI Supplier in Huambo.
Chromoly 4130 Type 6BX Welding Neck Flanges 15,000 PSI Distributor in Benguela
UNS G41300 Type 6B Welding Neck Flanges 5,000 PSI in Kalandula
Chromoly 4130 Type 6BX Welding Neck Flanges 15,000 PSI Stockist in Lubango
AISI 4130 Type 6BX Welding Neck Flanges 15,000 PSI in Angola
UNS G41300 Type 6B Welding Neck Flanges 5,000 PSI Stockist in Lobito
AISI 4130 Type 6B Welding Neck Flanges 5,000 PSI Distributor in Benguela
AISI 4130 Type 6B Welding Neck Flanges 5,000 PSI in Muxima
AISI 4130 Type 6BX Blind Flanges 10,000 PSI Stockist in Lubango
AISI 4130 Type 6BX Blind Flange 15,000 PSI in Lobito
ASTM A519 Grade 4130 Type 6BX Blind Flanges 10,000 PSI Supplier in Muxima
Chromoly 4130 Type 6BX Blind Flange 15,000 PSI Supplier in Benguela
UNS G41300 Type 6BX Blind Flange 15,000 PSI Supplier in Angola
ASTM A519 Grade 4130 Type 6BX Blind Flange 15,000 PSI Stockist in Kalandula
Chromoly 4130 Type 6BX Blind Flange 15,000 PSI Distributor in Angola
ASTM A519 Grade 4130 Type 6BX Blind Flanges 10,000 PSI Supplier in Benguela
UNS G41300 Type 6BX Blind Flange 15,000 PSI in Lobito
UNS G41300 Type 6BX Blind Flange 15,000 PSI in Huambo.
AISI 1.7218 Round Bars Stockist in Huambo.
UNS G41300 Hollow Bars Manufacturer in Muxima
Chrome Moly 4130 Hollow Bars Manufacturer in Kalandula
Chrome Moly 4130 Hollow Bars Exporter in Angola
Chromoly 4130 Hollow Bars Supplier in Benguela
Chrome Moly 4130 Hollow Bars Manufacturer in Lubango
Chrome Moly 4130 Bars Supplier in Muxima
AISI 4130 Bars Manufacturer in Lobito
AISI 4130 Round Bars in Lubango
UNS G41300 Bars Supplier in Angola
AISI 4130 Square Bar Distributor in Kalandula
AISI 4130 Polished Bar Distributor in Lubango
4130 Steel Forging Bar Distributor in Kalandula
AISI 4130 Forging Bar Stockist in Angola
4130 Steel Bar Stockist in Muxima
25crmo4 Round Bar Exporter Distributor in Lobito
AISI 4130 Alloy Steel Bright Bar Distributor in Huambo.
25crmo4 Round Bar Stockist in Benguela
AISI / SAE 4130 Round Bars Distributor in Lubango
AISI 4130 Forged Round Bars Stockist in Angola
AISI 4130 Hollow Bar Distributor in Angola
AISI 4130 Forging Hollow Bar Manufacturer in Benguela
AISI 4130 Hollow Bar Manufacturer in Kalandula
4130 Hollow Bar Manufacturer in Lobito
AISI 1.7218 4130 Hollow Bar Stockist in Huambo.
SAE 4130 Hollow Bar Stockist in Muxima
AISI 708A25 Hollow Bar in Lubango
25crmo4 Hollow Bar in Angola
AISI 4130 Hollow Bar Dealer in Muxima
High Quality AISI 4130 Hollow Bar Distributor in Lobito
Price List of ANSI B16.9 AISI 1.7218 Pipes, Tubes, Pipe Fittings, Flanges, Round Bars in Angola
AISI 4130 Pipes, Tubes, Pipe Fittings, Flanges, Round Bars Ready Stock in Angola
| AISI 4130 Welding Neck Flanges in Benguela | AISI 4130 Socket Weld Flanges Distributor in Lobito |
| AISI 4130 WNRTJ Flanges Dealer in Huambo.. | AISI 4130 Alloy Steel Flanges Stockist in Angola |
| AISI 4130 API 6A 10K RTJ Weld Neck Flange in Kalandula | AISI 4130 ANSI B16.5 Orifice Flanges in Angola |
| AISI 4130 Custom Pipes in Lubango | AISI 4130 Seamless Pipes Supplier in Lobito |
| AISI 4130 Round Pipes in Muxima | Alloy Steel 4130 Pipe in Benguela |
| 4130 Steel Pipe in Muxima | AISI 4130 Pipe Supplier in Angola |
| Grade 4130 Seamless Pipes in Huambo. | ASTM A519 Gr. 4130 Seamless Pipes in Lobito |
| ASTM A519 4130 Seamless Pipes Supplier in Lobito | UNS G41300 Pipes Stockist in Lubango |
| ASTM A519 Grade 4130 Seamless Pipe Stockist in Huambo. | ASTM A519 Gr 4130 85K Seamless Pipes in Muxima |
| AISI 4130 75K Drilling Pipes in Kalandula | AISI 4130 80K Pipe Manufacturer in Angola |
| ASTM A519 Gr 4130 75K seamless pipes in Benguela | 75000 PSI yield Strength – 105K UTS Alloy Steel Pipe Stockist in Angola |
| AISI 4130 80K Seamless Pipes Supplier in Huambo. | ASTM A519 Gr 4130 minimum 75K yield strength seamless pipes Supplier in Muxima |
| AISI 4130 Seamless Buttwelding 180° Returns in Angola | ANSI B16.9 Pipe Fittings Stockist in Lubango |
| Alloy Steel 4130 Pipe Fittings in Kalandula | SAE / AISI 4130 Pipe Fittings Dealer in Lubango |
| Alloy Steel AISI 4130 Fittings Supplier in Benguela | AISI 4130 Round Tubes Supplier in Angola |
| Alloy Steel 4130 Tube in Lobito | 4130 Chrome Moly Tubing in Lubango |
| AISI 4130 L80 Seamless Tubes in Muxima | Alloy Steel 4130 Round Tubing Stockist in Lobito |
| 4130 Seamless Alloy Steel Tube in Muxima | AISI 4130 Tubing Supplier in Angola |
| ASTM A519 Grade 4130 Tubing in Lubango | ASTM A519 4130 Seamless Tubing Supplier in Benguela |
| Alloy Steel ASTM A519 Grade 4130 Seamless Tubing Distributor in Kalandula | ASTM A519 Gr. 4130 Seamless Tubing in Huambo. |
| AISI 4130 L80 Tube in Lobito | 4130 L80 Chrome Moly Tubing in Lubango |
| AISI 4130 L80 Custom Tubes in Angola | AISI 4130 L80 Seamless Tubes in Huambo. |
| Alloy Steel 4130 Tube in Kalandula | AISI 4130 L80 Round Tubes in Angola |