ASME A53 GradeB OD 30 inchs Sch40 90 degree welded carbon steel elbows

Description:

1. Elbow: Long Radius 90 Deg, 45 Deg,180 Deg ; Short Radius 90 Deg, 45Deg,180 Deg
    Our Butt Weld Pipe Fittings can supply as clients draft drawing.
2. Size Range
    Seamless Fittings : 1/2inch to 24 inch
    Weld Fittings: 2 inch  to 72 inch
3. Material

Stainless steel, ASTM/ASME A403 WP 304-304L-304H  ASTM/ASME A403 WP 316-316L-316H-316Ti ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H

Specifications:

Packing: Wooden pallets or wooden cases, or any sea-worthy packing accoring to customers' requirements

Shipping: Sea freight and Air freight

Loading Port: Shanghai or Tianjin port of China

Leading time: 15-25 days after received down payment

Production Process:

• Material Selection: We primarily source raw materials from leading steel mills such as Baosteel, TPCO, Yanbao, Baotou Steel, Changbao, and Huarun. We select tubes with smooth internal/external surfaces, uniform wall thickness, and a preference for higher manganese content to ensure a superior final appearance.

• Material Inspection: Incoming materials undergo dimensional checks and chemical composition analysis.

• Warehousing: Approved materials are stored in inventory.

• Cutting: Tubes are cut to length with sufficient machining allowance. Burrs and metal chips are removed.

• Bending & Forming: Tubes are heated using medium-frequency induction heaters and formed via pushing with precision dies. Dies are re-polished every 48 hours of operation to maintain strict dimensional tolerances.

• Heat Treatment: Stress relief annealing (tempering) is performed.

• End Machining: Bevels are cut on 90-degree CNC lathes to an angle of 37.5° ± 0.25°. The land (flat edge at the end of the bevel) is sized according to the pipe diameter. The land ensures a flush fit for butt welding and prevents burn-through during the TIG root pass.

• Visual Inspection: Surfaces are checked for defects like scratches, peeling, or pitting.

• Chemical Analysis: Composition is verified using imported handheld spectrometers.

• Dimensional Inspection: Checks include outside diameter, wall thickness, ovality, and straightness.

• Mechanical Testing: Tests include flattening and flaring to validate performance.

• Sandblasting: A fine grit is used to create a uniform surface finish without excessive pitting.

• Painting: Surfaces are evenly coated using environmentally friendly spray equipment.

• Marking: Legible black background with white lettering is applied using a marking machine.

• Packaging: Products are packed in wooden cases or on pallets, secured with steel strapping, and wrapped in plastic film for weather and dust protection.

• Shipping: Careful handling using forklifts and overhead cranes ensures secure and orderly loading for transport.

Quality Assurance & Company Profile:

1. Certifications: ISO 9001 Quality Management System, Environmental Management System, Occupational Health & Safety Assessment Series, AAA Credit Rating, and SGS International Certification.

2. Quality Control: An integrated international ERP system manages production, supplemented by a secondary manual quality inspection to guarantee a 100% pass rate.

3. Production Capacity: Annual output of 20,000 tons of pipe fittings.

4. Facilities & Workforce: 7,000 sqm storage warehouse and a team of 200 employees.

5. R&D & Customization: A 300 sqm sample room supports our in-house R&D and ODM/ custom manufacturing capabilities.

6. Service: We offer straightforward cooperation, responsive service, and efficient logistics.

7. Experience: A decade of expertise in international export.