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Company Introduction:
260 workers, 250,000m² nondust workshop, 12 years experience, ISO, API, 5L, API 5CT, CPD & PED certified, one hour reach Tianjin port, two hours to Beijing. this is how we keep good quality and competitive prices for global valued customers.
Our main products cover ERW Weld Steel pipe, LSAW pipe, SSAW pipe, Stainless Seamless pipe, Galvanized pipe, Square pipe, Steel Plate, Steel coils etc.
We attend many trade fairs, Such as the Canton Fair every year,
The V PIPES,FITTINGS AND CONMPONENTS INTERNATIONAL FAIRS (TUBOTECH) etc
ASTM A312 304 stainless pipe
Type 304 stainless steel is the most common austenitic chromium-nickel stainless steel and is a variation of the classic 18-8 stainless. Its properties provide corrosion resistance to a wide range of atmospheric, chemical, textile, petroleum, and food industry exposures.
| Typical 304 Chemical Composition /% | ||||||||||
| Material | C | Si | Mn | P | S | Ni | Cr | Mo | N | Ti |
| 304 | ≤0.08 | ≤0.75 | ≤2.00 | ≤0.045 | ≤0.03 | 8.0-10.0 | 18~20.0 | / | / | / |
| Typical 304 Mechanical property | ||||||||||
| Material |
Yield strength σ0.2/Mpa |
Tensile strength σb/Mpa |
Elongation δ5/% |
Hardness Test HB HRB |
||||||
| 304 | ≥205 | ≥515 | ≥40 | ≤217 | ≤95 | |||||
Products specification:
| Name | stainless pipe |
| Standard | ASTM, GB, JIS, DIN, EN, AISI |
| Material Grade | TP304 TP304L TP316 TP316L TP347 TP347H TP321 TP321H TP310 TP310S |
| TP410 TP410S TP403 | |
| S31803/S32205 S32750 S32760 | |
| Outer Diameter | Seamless Pipe: 4mm-630mm |
| Welded Pipe: single slit(Φ8mm-Φ630mm); girth(Φ630mm-Φ3000mm), | |
| Thickness | Seamless Pipe: 0.6mm - 20mm |
| Welded Pipe: single slit(0.5mm-25mm);girth(3mm-45mm) | |
| Length | 5.8-6.1 m or as customers' request |
| Tolerance | Acording to the Standard. |
| Surface | 180G, 320G, 400G Satin / Hairline |
| 400G, 500G, 600G or 800G Mirror finish | |
| Application | Petrochemical industry, chemical fertilizer industry, oil refining industry, oil and gas industry, light industry and food industry, pulp and paper industry, energy and environmental industries. |
| Test | UT, ET, HT, RT,ect, and others according to the standard,or as the requests of the customers |
Tolerances on dimensions table:
| Standard | Outside(mm) | Thickness(mm) | Length(mm) | |
| ASTM A312 | ≤48.26 | +0.40 -0.80 | +No special provisions(Unspecified)-12.50% | Appoint LengthDefinite cut length+6.40
-0 |
| >48.26~114.30 | +0.80 -0.80 | |||
| >114.30~219.08 | +1.60 -0.80 | |||
| >219.08~457.20 | +2.40 -0.80 | |||
| >457~660 | +3.20/-0.80 | |||
| >660~864 | +4.00/-0.80 | |||
| >864~1219 | +4.48/-0.80 | |||
| JIS G3459 | <30.00 ±0.30≥30.00 ±1.00% | <2.00 ±0.20≥2.00 ±10% | Appoint LengthDefinite cut Length | |
| GB/T 12771 | <13.00 ±0.2013.00~40.00 ±0.30≥40.00 ±0.80% | ≤4.00 +0.50 -0.60>4.00 ±10% | +20.00-0 | |
| EN 10217-7 | D1±1.50% with±0.75mm(min)D2±1.00% with±0.50mm(min)D3±0.75% with±0.30mm(min)
D4±0.5% with±0.10mm(min) |
T1±15.00% with±0.60mm(min)T2±12.5% with±0.40mm(min)T3±10.00% with±0.20mm(min)
T4±7.50% with±0.15mm(min) T5±5.00% with±0.10mm(min) EN ISO 1127 |
≤6000 +5.00 -06000~12000 +10.00 -0 | |
Products show:
Our workshop:
Delivery& Service:
One of the key benefits of working with Boai is our ability to truly partner with our clients, to not only manufacture and deliver top quality product in sync with project timetables but to understand our clients' projects and use our expertise to provide solutions.
Boai has the ability to work to our clients’ timetable and can manufacture and supply quality, locally produced pipe on short lead times in the lengths required.
Our advantages:
Physical and chemical testing equipment
Pneumatic machine
pressure test
Universal testing machine
Eddy Current Inspection
Ultrasonic testing
Chemical Laboratory
Testing Center Apprance
Physical Laboratory
If you have any inquriy, please feel free to contact Helen for more information.
We will try our best to offer you competitive price, reliable quality and immediately leadtime. Welcome your inquiry!
Skype: Helen.boyu
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