This amount includes seller specified US shipping charges as well as applicable international shipping, handling, and other fees. Estimated delivery dates - opens in a new window or tab include seller's handling time, origin ZIP Code, destination ZIP Code and time of acceptance and will depend on shipping service selected and receipt of cleared payment - opens in a new window or tab. This item will be shipped through the Global Shipping Program and includes international tracking.
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This item will be posted through the Global Shipping Program and includes international tracking.
This amount includes seller specified US postage charges as well as applicable international postage, handling, and other fees. Estimated delivery dates - opens in a new window or tab include seller's handling time, origin postcode, destination postcode and time of acceptance and will depend on postage service selected and receipt of cleared payment - opens in a new window or tab.
Will usually post within 1 business day of receiving cleared payment - opens in a new window or tab.
Refunds by law: In Australia, consumers have a legal right to obtain a refund from a business for goods purchased if the goods are faulty, not fit for purpose or don't match description. By submitting your bid, you are committing to buy this item from the seller if you are the winning bidder. By clicking Confirm, you commit to buy this item from the seller if you're the winning bidder. By clicking Confirm, you're committing to buy this item from the seller if you're the winning bidder and have read and agreed to the Global Shipping Program terms and conditions - opens in a new window or tab.
Customers will receive their respective tracking code for the mail after payment has been made. Do take note Weekends may differ from States to States , Thus there will be no Delivery on Saturday and Sunday . Customers will receive their goods in 1-7 Working days depending on their location and may change from time to time due to seasons , Weekend Holidays and weather.
Outskirts areas will need additional 1-14 Working days and self-collection at the nearest warehouse are required if the area is too far.
Customers will be given their respective tracking number (If any) once payment has been made.
Shipping via Sea will take approximately 4 weeks .By Flight takes approximately 1 -2 weeks to arrived . Price that are in lower amounts are posted for general guidelines , for the full official price , kindly contact us . We Do Not Entertain Any Thieves, Spies, Frauds, Scams, Abusers, Rude customers And We Reserve The Right To Decline Any Of This Type Of Individuals.
Out of Stock Items: If the Product ordered Is Out Of Stock, We will Inform Our Customers with the choice of Refund ( Same amount in RM) OR recommendation of similar value brands.
Change of address : All customers are required to provide name , full address and valid phone numbers before delivery . Shipping : If your order was placed Monday thru Thursday ( Before 12pm) with fully paid payment , we will try our best to deliver to the transporter the same day or the next working day.
Overseas Shipping: Currently Delta Welding only deliver within Malaysia , Sabah and Sarawak . Delta Welding Shall Not Be Liable, In Any Event,, For Any Consequential Or Special Or Incidental Damage Or Other Indirect Loss However Arising, Whether Or Not Delta Welding Had Knowledge That Such Damage Might Be Incurred, Including, But Not Limited To Loss Of Income, Profits, Interest, Utility Or Loss Of Market. Usage of services or materials :This website contains material which is owned by or licensed to us. No Information Obtained Via The Website Shall Create Any Warranty Not Expressly Stated By Delta Welding (M) Sdn Bhd Express In These Terms And Conditions.
General: The content of the pages of this website is for your general information and use only.
Weld integrity, quality and consistency are compatible with higher welding productivity and lower fabrication costs, as long as key factors are taken into consideration. Welders and Welding Engineers face distinct challenges in an era of increased scrutiny by governmental regulations, owner’s representatives and agency classification societies.

In addition to an increased risk of hydrogen cracking mechanical properties such as Crack Tip Opening Displacement (CTOD) toughness often suffer when larger weld beads are deposited with conventional welding consumables and processes. Consistent CTOD values for a weld deposit may also serve as its own productivity improvement. Post weld heat treatment shall be performed for welded joints of C-Mn and low alloy steel having a nominal wall thickness above 50 mm, unless fracture toughness testing shows acceptable values in the as welded condition.
Consistent CTOD values in the as-welded condition eliminate the need for PWHT, significantly reducing cost and improving productivity.
Diffusible Hydrogen and Consumable SelectionProper selection of welding consumables is also vital at higher deposition rates to resist a common failure – delayed hydrogen cracking in the thicker weld beads.
Qualification of materials and welding procedures used in critical structural offshore and pipeline applications often includes extensive welding and testing under production conditions for validation of mechanical properties, including CTOD toughness.
Failure mode rankings use frequency, severity and detectability of defects in determining a rating of risk. The cross-section of a hydrogen crack (Figure 4a) from a high strength weld indicates that such cracks may also initiate immediately.
All SAW fluxes (both agglomerated and fused) have a unique correlation between moisture content and diffusible hydrogen. The ability to use a flux with no pre-conditioning reduces cost and complexity, while minimizing the chance for error during handling.
ConclusionSpecifying consumables for deepwater and ultra-deepwater SAW applications requires forethought and diligence in order to produce robust welds that not only stand up to harsh environments but also meet increasingly stringent industry quality and testing standards, such as CTOD values.
Contact the seller- opens in a new window or tab and request a shipping method to your location.
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Import charges previously quoted are subject to change if you increase your maximum bid amount. Areas such as Outskirts of Johor , Kedah , Pahang , Perlis , Terengganu and other States will subject to delay of 1-7 days . In any case , after the validity period has ended , Delta Welding (M) Sdn Bhd has the right to cancel the quotation or make changes to the price without prior notice due to currency fluctuations . Cancellation of the Order by the customer will only be accepted on condition that any costs, charges and expenses already incurred, work or cancellation conditions are to be charged to the Customer forthwith. The risk of loss or damage to the Goods shall pass to the Client upon delivery of the Goods. If you wish to arrange your own agent to collect the goods , customers are required to inform ( 3 days prior) and how the items should be packed . Delta Welding will not be held responsible if there is a delay in delivery as the schedule of the shipping company is beyond our control. If your order was placed on Friday prior to 12:00PM , the order may be shipped the same day, if not it will be shipped on Monday. If you wish to deliver the parcel overseas , customers are required to arrange their own transportation .
DO note that if ship via SEA , the shipping details will only be generated after 2 working weeks . This material includes, but is not limited to, the design, layout, look, appearance and graphics and reproduction is prohibited .
It is subject to change without notice.Usage of any information or materials on this website is entirely at your own risk, for which Delta Welding shall not be held liable. Owner representatives are closely monitoring the welding activity of yards, commonly looking for less than one percent defect rate in overall welding performance before contracts are awarded. This article quantifies the risk factors beyond those explored in standardized diffusible hydrogen and CTOD testing, dispelling some commonly held beliefs and proposing others. As shown in Figure 1, AC Waveform Control permits significant increases in electrode deposition rates, allowing for higher weld productivity at the same average heat input. Because diffusible hydrogen testing is extremely difficult to quantify outside of a laboratory, the same is not true for its validation.

Other methods of lowering diffusible hydrogen (interpass hold times and dehydrogenation soaks) reduce productivity. Flux moisture characteristics are equally important in minimizing risk for hydrogen related cracking. New technology used in the design, manufacture and packaging of welding flux allows for the welding of Lincolnweld® 842-H™ directly from its package. This, combined with a high toughness, low hydrogen flux can achieve the goals of lowering costs while lowering risks. If you reside in an EU member state besides UK, import VAT on this purchase is not recoverable. The Company reserves the right to increase a quoted fee in the event that the client requests a variation to the work agreed. If customer wish to reserved any items, feel free to drop us a deposit to avoid any disappointment . Kindly take note that the schedule of shipment may vary depending on different courier agents .
It shall be your own responsibility to ensure that any products, services or information available through this website meet your specific requirements.
This requires that the design engineering, fabrication and construction firms re-think the margin of safety in their welding processes. From this, options are established to mitigate these risks in the real-world environment of heavy offshore structures. Post Weld Heat Treatment (PWHT) is often used by fabricators to relieve residual weld stresses. Further complicating the situation is the fact that most offshore yards are in high humidity areas near the sea. Cracking in the welds of any subsea pipeline or component is a severe defect, with increased risk of in-service failure due to the difficulty associated with detecting hydrogen cracks. The exposed crack surface (Figure 4b) confirmed immediate cracking as heat tint was found in the first pass region. This relationship limits the minimum achievable hydrogen content for a given flux, even after pre-baking or pre-drying the flux. Here, the new technology is again compared with that of the “industry standard” flux, and the magnitude of the difference in diffusible hydrogen after exposure is astounding. Fabricators and inspectors are often comfortable with a diffusible hydrogen level of 5 ml per 100g of weld metal but would be rightfully concerned with a value of near 15 ml per 100g of weld metal! To reach first oil or gas in deep water, designs incorporating higher strength materials are increasingly common, as are higher productivity welding procedures, even in automated processes such as submerged arc welding (SAW). As such, it’s important that offshore firms increase their technical requirements for welds and look to new technologies and strategies to maintain consistency and quality of weld deposit properties as well as achieve higher productivity.
These factors makes it even more critical that a SAW wire and flux combination are robust in their ability to deposit low hydrogen weld metal – both directly out of the bag and after exposure to humid environments.
The factors of severity and detectability yield a high risk associated with hydrogen cracks in structural offshore welds.
For SAW, this is achieved through welding procedure upgrades in combination with proper selection of welding consumables. This is valuable for the offshore construction industry where consistency in operability, impact toughness and low diffusible hydrogen are critical. In this case, hydrogen cracks may be located deep within a weld joint (common offshore joints are as deep as 3 or 4 inches) requiring sophisticated NDT techniques for detection and great expense to repair. The result is larger diffusion distances, shorter periods of time for hydrogen to escape and an increased risk of hydrogen related cracking. These factors, especially when combined with the microstructures of higher-strength steels common to the offshore welding industry, require a new look at hydrogen control in every aspect of welding.

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