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How To Inquiry A Flange


"Please quote flange!!!"

In all seriousness, with over 100,000 standard variations, there are a few data points we must have to quote your project accurately. This data can differ between certain specifications, so we have elected to break it down below to lend a helping hand!

½” – 24” – Covered by ASME B16.5
(This should cover most commodity items, but if this doesn’t seem to fit your application keep reading below.)

1. Quantity of Flanges
2. Nominal Pipe Size
3. Pressure Class (150#-2500#)
4. Facing Type (RF, FF, RTJ…)
5. Flange Type (Weld Neck, Slip On, Blind…)
   a. IF Socket Weld OR Weld Neck Flanges
      i. What Schedule bore do you need?
6. Material

Example: 5 Pcs – 6” 150# RF Weld Neck SchSTD A105

NOTE: Flange OD and quantity of bolts do not need to be specified when you use above quote structure.

FUN FACT: Did you know Sch Standard and Sch40 can differ if the flange you need is large enough? If you are not sure, let us know and we are always happy to help!

26”-60” – Covered by ANSI B16.47
(Weld neck and blind flanges ONLY. For Slip on’s, see next section)

1. Quantity of pieces needed
2. Nominal Pipe Size
3. Pressure Class
4. Facing Type (RF, FF, RTJ…)
5. Flange Type (Weld Neck OR Blind)
   a. IF Weld Neck:
      i. What Schedule bore do you need?
        1. If needed, check out our Flange Bore Chart to confirm dimensional data.
6. Series A or Series B?
   a. Not sure what the difference is? Check our FAQ to learn more! Or view our catalog for full dimensions!
7. Material

Example: 2 Pcs – 32” 600# RF Blind Ser.B A105

Slip On Flanges Larger Than 24”

Unlike slip on’s 24” and smaller, which neatly fall under B16.5’s singular configuration per class, slip on’s larger than 24” get a little more complicated. We have a section in our FAQ called “How do I call out a Slip On Flange above 24”?” and we encourage you to check it out if you need more clarification.

In short, the following specs are the most commonly requested for this type of large diameter slip on:

• Industry Standard 125LW, 125/150, Class 250
• Boiler Code Class 75, 175, 350
• B16.47 Ser.A Dimensions per Tube Turn
• B16.47 Ser.B dimensions with 1” hub

Example: 2 Pcs – 30” 150# RF Slip On Series A per Tube Turn A105


American Waterworks Association (AWWA) Flanges

1. Quantity of pieces needed
2. Nominal Pipe Size
3. Class (B, D, E, F)
4. Type (Ring, Hub, Blind)
5. Material (If not standard AWWA carbon steel)

Example: 4 Pcs – 30” Class D Ring C/S


Need something Custom?

Don’t worry if you need something custom/special!! We can quote from a drawing if you send it in to one of our sales team! Another option is to call us, or email This email address is being protected from spambots. You need JavaScript enabled to view it.!!

PRO TIP: Feel free to find the standard drawing you need to modify in our CAD / 3D Flange Drawings page, mark it up, and send it over! Conversely, we have blank flange templates for you to modify, just ask your salesman for one! Please make sure your project engineers certify the modifications! We know a whole lot about flanges, but not so much about anything else. (Except for maybe some Football. This is Texas after all.)

How To Inquiry A Flange

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Shale Is The New Black? Permian Pipelines Relieve Bottleneck?

Alaskan Oilfield Production Annually

It was recently announced that Jeffery Hildebrand’s (A Houston Texas Native I might add) Hilcorp Energy Co. is acquiring an assortment of older Alaskan wells and pipelines from BP Plc for ~5.6 Billion dollars. BP held these assets for ~60 years, but as momentum has increased for shale oil production methods in the Permian Basin “big oil” has shifted their focus away from some of their more “traditional” production methods. The biggest concern from investors appears to be the high decline rate found in shale based wells. Some statistics indicate that these well can lose up to 70% of production in the first year of operation, meaning there is a constant re-investment that must be made to find and drill new wells. Comparatively, conventional wells are cited as losing as little as 5% annually.

Future Prices for West Texas Intermediate Crude Oil

Thus far I have cast a very “sour” (excuse my pun...)  view of shale plays, but they appear to have had a very beneficial effect on the market volatility and should lead to more stable prices long term. The reduction of costs to drill new wells coupled with the speed at which new wells can be brought online makes it easier for these wells to at least break even (if not profit) in the $50-$60 per barrel range.

It has been a long time coming, but I am happy to announce that the bottleneck in the Permian is on its way to being alleviated. It was announced mid-August that a second pipeline from the basin came online and the crude EPIC Midstream would be accepted by Moda Midstream in Ingleside Texas. The supply picture aside, the one major concern for price stability moving forward will be worldwide demand. Fears of recession in certain countries will influence pricing. Retail sales and employment figures stateside still look good, but a few economists and analysts have noted that we may have already entered a manufacturing contraction.

Hurricane Dorian

P.S.A For those who may live or know those who live in Florida. Hurricane Dorian has changed course and is speculated to make direct landfall in the Sunshine state with no obstructions along the way thus increasing the potential for devastating conditions. Everyone please be prepared and stay safe.

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Hammerstones To Flanges: The Bronze Age

The Bronze Age began around 3000 BC when early man started to work heavily with metals, particularly bronze. Stone tools and weapons soon gave way to newer, stronger bronze variations. During this time period, bronze was the strongest metal in widespread use. The discovery of bronze allowed societies to created harder, more durable versions of tools and weapons previously made from stone or other less than ideal materials. Initially, bronze was made by alloying copper with arsenic, but over time arsenic would be replaced with an easier to work with and less toxic ingredient; tin.

late bronze ageThis era is also characterized by early features of urban civilization such as a rise in nations and early writing systems. Many key technological advances occurred during this era, including the wheel and rope. At the time, bronze was mainly used to make bladed weapons, armor, building material and tools. Today, bronze is used to make anything from coins to turbines (insert joke about 3 place medals here) and even…. (You guessed it!) Flanges!!

Bronze flanges are utilized in many industries, such as aerospace, petrochemical, nuclear, medical, and other industrial applications. If you are looking for a bronze or even copper alloy flange, bronze flangeplease reach out to our sales team and we would be more than happy to discuss price and lead time per your order requirements.



field notes magThe birth and growth of the Bronze Age may have been steady and happened across ~1,000-1,500 years, but the end was abrupt and quite widespread. To this day, the exact cause of these Bronze Age kingdoms collapsing remains unclear. Archaeological evidence indicates that sociopolitical unrest and natural disasters (Such as severe droughts) are possible causes in the untimely end and loss of many of the advances made during this era. Historians also think a possible disruption in trade routes may have caused shortages of materials, leading to metal smiths of the time experimenting with iron as an alternative.

Interested in learning about a time that certainly rocked? Don't take our post about the Stone Age for granite! Check it out here!

Would you like to learn more? Keep an eye out for our next installation: The Iron Age!

Don't forget to check out our other free online resources!

CATALOG           3D-Drawings            Flange Charts/Tables

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Hammerstones to Flanges? How Man And Metal Have Co-Evolved

Throughout the evolution of the human condition, we have relied heavily on discovery and innovation to survive. Ancient societies used stone and eventually metals to create tools and weapons, and the ability to refine and utilize those metals was a major turning point in our technological abilities. These innovations led to advances for numerous applications and paved the way for our modern

Historians use the inherent link of industrial development and the materials to categorize certain periods of significant social and technological advancements. We are starting with the Stone age and will very quickly progress into the subsequent ages. Bear with us.


Stone Age

knp news late stone age 590


Before there was widespread use of metals, Ancient man used stone as a crafting medium and thus this large period of time is referred to as “The Stone Age”. The Stone Age lasted millions of years and is characterized by the evolution of the genus Homo (That’s us! Kind of…) and the use of primitive stone tools. Despite being called the Stone Age, not all tools were made from just Different cultures experimented with different materials like wood, bone, or antlers. One of the first and simplest stone tools were hammerstones. Prehistoric humans used hammerstones to chip other stones into sharp-edged flake. Hammerstones were also used to break apart nuts, seeds and bones or to grind clay into pigments.Over time, early man created more sophisticated stone tools such as hand axes, spear points for hunting, scrapers to prepare animal hides and awls for shredding plant fibers to make clothing. These tools, while simple, served a very important function for our ancestors and paved the way for future innovations.axe



The most important “invention” of this era? Fire. Or rather, the controlled use of fire. With fire, prehistoric man was able to create heat and light, two things we associate with basic human needs today. This discovery allowed them to cook food, create a place of community to gather in the dark, and it permitted them to discover how to warp reality to suit their needs. Recent evidence, dating to around 164,000 years ago, found that early humans residing in South Africa used fire as an engineering tool. What do I mean? They would use fire to alter the mechanical properties of the stone used to make tools and utensils. Once heat treated, the stones were modified into crescent shaped blades, arrowheads, skinning tools, etc... This technique would be used to pioneer the early forms of metallurgy.


The first experiments with metalworking, along with the development of smelting and alloying, would become the official markers for the transition from the Stone Age to the next era of man: The Bronze Age. From there the improvements and innovations compound into the wonderful world we live in today. BUT we won’t get ahead of ourselves just yet. There are other metals, processes, alloys, and industrial innovations to discuss before we are can draw the line between sticks and rocks to modern refining processes and industrial flanges.arrowhead




Is the Stone Age not far back enough in the history of metal? Check out our Star Flanges blog! That is literally as far back as it goes in the timeline and helps to explain where everything came from!

Have a suddenly insatiable thirst for knowledge and need to know what happens next in the thrilling saga of the industrial romance between mankind and metal? *ANNOUNCER VOICE* Check it out next time on: The Bronze Age.

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What You Need To Know About Tropical Storm Barry and How It Affects Oil & Gas

barry blog chart

Source: Bloomberg

Last Friday, July 12th, we all were very concerned for all our friends out in the Gulf and for all of those in the direct path of “Tropical-Briefly Hurricane-Storm Barry”. While we are still praying for those who received over 15 inches of water, all of those affected by the flooding near the Mississippi River, and all those still underneath Barry, I wanted to take a look at what Barry influenced along his journey and what it means for all of us in the industry. Preliminary figures indicate that Barry had the potential to cause $800-900 million dollars in damage, however be on the lookout for updated numbers as Barry continues to wane.

In preparation for Barry, offshore operators evacuated rigs, relocated them, or at the very least halted production due to safety concerns over the coming storm. By Wednesday July 10th, 600,000 barrels of production had been halted, and by Friday July 12th, over 1,000,000 barrels per day of Gulf production come to a standstill. While this is only ~1/12th of the United States production capacity, this slowdown contributed to the WTI price spike around July 10th and oil is still trading at the natural disaster premium with a slight retracement back below $60 as of the morning of July 16th. The officially posted figures indicate that ~%53 of oil production and ~%45 of natural gas production were cut in preparation of Barry.

The unfortunate truth is that we have refineries to worry about at home, not just the rigs in the Gulf. Initially, refineries in the storm path intended to stay online, but as Barry bore down numerous refineries decided to go offline to mitigate any potential dangers for the employees and the facilities. While I do not have any hard numbers, the true tell will come in a week or so with any fluctuations up in the price of gasoline at the pumps. Something else to keep an eye out for: if refinery output falls below crude production, we could tip the good ole scale of supply and demand against our favor and cause a drop in crude pricing.

Two major players in LNG (Liquefied Natural Gas), Cheniere Energy’s Sabine Pass terminal, and Sempra Energy’s new Cameron Facilities were both potentially in Barry’s crosshairs, and currently it appears as though no debilitating damage occurred. It is worth noting that Phillips 66’s refinery in Alliance, Louisiana was shut down Friday July 12th during the mandatory evacuation order in Plaquemines Parish. As of Monday July 15th, the Alliance refinery has started operations again and should be operating at full capacity again shortly.

While Barry has damaged homes and flooded some areas of Louisiana, we can all be thankful that it did not maintain “Hurricane” status upon landfall and that it did not dump quite as much rain as anticipated. Though some scary pictures oin NOLA circulated, we are happy to hear the pump system got them dry very quickly. Louisiana officials also state that NO LEVEES were breached by the storm surge. HALLELUJAH!

Please stay tuned for next month’s report, and if you missed last month’s report check it out HERE!

Don't forget to check out our other free online resources!



Flange Charts/Tables

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