At PPV CORP, we deliver high-quality ASME-certified welding, fabrication, and assembly services for a wide range of industries. Our experienced team and certified welders ensure projects are completed safely, on time, and in compliance with all industry codes.

PPV CORP offers professional welding and certified welder services with all Welding Procedures Specifications (WPS) and Welders Performance Qualifications (WPQ) are qualified to applicable Codes and customer specifications for a wide range of materials including:

• Carbon Steel – Welding for pressure vessels, piping, tanks, and structural components.

• Low Temperature Carbon Steel (-50°F) – Procedures for low-temperature service requiring impact-tested, tough welds.

• Stainless Steel – Austenitic stainless steel welding for corrosion-resistant vessels, piping, and process systems.

• Cryogenic Stainless Steel (-320°F) – Welding for extreme low-temperature applications with controlled heat input for durability.

• Duplex Stainless Steel 2205 – High-strength, corrosion-resistant welding requiring precise procedure control.

• Super Duplex Stainless Steel – Advanced welding for highly corrosive environments and demanding industrial applications.

• Aluminium – Welding for lightweight structures, tanks, and piping requiring specialized techniques and certified welders.

All welding is performed by ASME Section IX certified welders, following approved WPS and industry codes (ASME, API, AWS, NACE, ABS, NBBI), ensuring compliance, safety, and top-quality results.

 

Provide welding services meeting following Codes

• ASME B31.3
• ASME B31.4
• ASME B31.8
• ASME B31.12
• ASME BPVC Section II Material
• ASME BPVC Section V Non Destructive Examination (NDE)
• ASME BPVC Section VIII Div 1 U Stamp Pressure Vessels
• ASME BPVC Section IX Welding Procedure Specification (WPS) and Welder Performance Qualifications (WPQ)
• AWS D1.1 for Structural Skids and Pipe Supports
• ABS, DNV for Offshore and FPSO
• PED Pressure Equipment Directive
• Any other Code requirements requested by Customer specification

Non Destructive Examination (NDE)

During welding and fabrication process to check weld quality and integrity following NDE techniques are used.

• Visual Testing (VT)

• Full or Partial Radiography (RT, X-ray)

• Liquid Penetrant Testing (PT)

• Magnetic Partical Testing (MT)

• Ultrasonic Testing (UT)

• Pressure Testing (Hydrostatic or Pneumatic)

• Positive Material Identification (PMI)

• Hardness Testing (NACE MR0175)

• Leak Testing

PPV CORP Welding & Fabrication Process

At PPV CORP, we follow a rigorous welding and fabrication process to ensure all projects meet ASME, API, AWS, and other industry standards. Our process is designed to deliver high-quality, consistent results for pressure vessels, piping, process systems, and structural components.

Industries we serve not limited to following:

Oil & Gas

We provide pressure vessel, piping, and process system fabrication for upstream, midstream, and downstream oil & gas operations. Our welders are certified for carbon steel, stainless steel, duplex, and super duplex materials, meeting strict ASME and API standards.

Refineries & Power Plants

Our fabrication and welding services support refinery process systems and power plant infrastructure, including boilers, heat exchangers, piping, and pressure vessels. PPV CORP ensures all work meets ASME BPVC and industry safety codes.

Industrial Machinery & Manufacturing

We specialise in custom fabrication and welding for industrial machinery, process systems, and modular skids. Our expertise spans carbon steel, stainless steel, aluminium, and duplex materials for reliable, long-lasting solutions.

Paper, Food Processing & Agricultural Industries

PPV CORP delivers ASME code-compliant vessels, piping, and structural systems for paper manufacturing, food processing, and agricultural equipment. Our certified welders maintain hygiene, corrosion resistance, and safety standards.

Aerospace & General-Purpose Industries

From aerospace components to general-purpose industrial projects, our team provides precision welding and fabrication for specialized materials and critical applications. We ensure compliance with all applicable codes and industry standards.

Why Choose PPV CORP?

• Certified Welders & Inspectors – ASME Section IX qualified

• Materials Expertise – Carbon steel, low-temp steel, stainless, duplex, super duplex, aluminum

• Industry Codes – ASME, API, AWS, NACE, ABS, NBBI

• On-Time Delivery – No project too big or small

• Quality Assurance – In-house Certified Welding Inspector ensures superior results

Common welding processes used at PPV CORP are:

• MIG Welding - Gas Metal Arc Welding (GMAW)

• TIG Welding - Gas Tungsten Arc Welding (GTAW)

• Flux Welding - Cored Arc Welding (FCAW)
• Submerged Arc Welding - Sub-Arc Welding (SAW)

MIG WELDING (GMAW)
MIG welding is one of the easier types of welding for beginners to learn. MIG welding is actually two different types of welding. The first uses bare wire and the second flux core.
Bare wire MIG welding can be used to join thin pieces of metal together. Flux core MIG welding can be used outdoors because it does not require a flow meter or gas supply. MIG welding is usually the welding of choice for DIY enthusiasts and hobby welders who don’t have the money to spend on expensive equipment.

STICK WELDING (SMAW)
Stick welding, also known as Arc welding, is doing it the old-fashioned way. Stick welding is a bit harder to master than MIG welding. Stick welding uses a stick electrode welding rod.

TIG WELDING (GTAW)
TIG welding is extremely versatile, but it is also one of the more difficult welding techniques to learn and are skilled individuals.
Two hands are needed for TIG welding. One hand feeds the rod whilst the other holds a TIG torch. This torch creates the heat and arc, which are used to weld most conventional metals, including aluminum, steel, nickel alloys, copper alloys, cobalt and titanium.

Submerged Arc Welding (SAW)
SAW welding is a high-productivity, automated process where an electric arc is submerged under a blanket of granular, fusible flux to join thick metal plates.
It offers superior penetration, high deposition rates, and no visible arc or spatter. Common uses include shipbuilding, pressure vessels, and heavy structural components                           

WHAT IS WPS?

 

A Welding Procedure Specification, or WPS, is a document that serves as a guide for the effective creation of a weld that meets all applicable code requirements and production standards. WPS contains details that are necessary to create the desired weld. This includes information such as base metal grade, filler metal classification, amperage range, shielding gas composition, and pre-heat and inter-pass temperatures. The idea is that if a group of welders adhere to all the details on a WPS, they should each be able to produce welds with reasonably similar mechanical properties.

WHAT IS PQR?

The procedures for creating and testing the sample welds, as well as the final results, are documented on a Procedure Qualification Record, or PQR. If the test results are acceptable, the PQR is approved and can then serve as the foundation on which one or more WPSs are drafted. In short, a PQR serves as evidence that a given WPS can, in fact, be used to produce an acceptable weld.

WHAT IS WPQ?

 

Welder Performance Qualification (WPQ) is performed to determine whether the welder or the welding operator can produce a sound weld or not. Each welder or welding operator shall be qualified for each welding process to be used during production (or fabrication) welding.

The welder is required to weld a test coupon in accordance with the qualified welding procedure specification (WPS), the test coupon is then Radiography/ Ultrasonic or Mechanically tested (as per the requirements of the code of construction). After satisfactory test report the welder may be employed for the production welding (or fabrication welding). Following important factors shall always be considered before conducting the welder performance qualification test.

• Welding Procedure Specification (WPS)

• Welding Process such as GTAW, GMAW, SMAW, SAW

• Size of test coupon, pipe or plate, pipe diameter and schedule, plate thickness

• Position of the test coupon flat, horizontal, vertical, overhead (1G, 2G, 3G, 4G, 5G, 6G)

• Filler metal/Electrode bare, solid, flux core